osteo-

[ˌɔʃ.t͡ʃɪ.o]

Combining form of Ancient Greek ὀστέον (ostéon, “bone”).


pseudo-

pseudociência


a-

From Old Galician-Portuguese a-, from Latin ad-.

a- + vermelho (“red”) + -ar → avermelhar (“to redden”)

a- + baixo (“low”) + -ar → abaixar (“to lower”)

added to adjective X, forms verbs meaning to make/turn X

a- + pavor (“dread”) + -ar → apavorar (“to frighten”)

a- + fama (“fame”) + -ar → afamar (“to make famous”)

added to noun X, forms verbs meaning to cause or make X or to cause something to have X


a-

Borrowed from Ancient Greek ἀ- (a-), from Proto-Indo-European *n̥-.


exa-

exa- (SI prefix multiplying the unit by 10¹⁸)


peta-

peta- (SI prefix multiplying the unit by 10¹⁵)


tera-

tera- (SI prefix indicating 10¹², a trillion)


yotta-

Unadapted borrowing from English yotta-.

yotta- (prefix of the International System of Units, with the symbol Y, which is equivalent to multiplying the unit affected by it by 10²⁴)


giga-

giga- (SI prefix multiplying the unit by 10⁹)


im-

a form of the prefix in-, used before b and p


auto-

Borrowed from Ancient Greek αὐτός (autós, “self”).

bor+

auto- + ódio (“hatred”) → auto-ódio (“self-hatred”)

self-; auto- (done by or directed at oneself)

auto- + foco (“foco”) → autofoco (“autofocus”)

auto- + carro (“car”) → autocarro (“bus”)

(Brazil, linear algebra) eigen- (relating to eigenvectors and eigenvalues)


zoo-

From Ancient Greek ζῷον (zôion, “animal”). Doublet of bio-.


tri-

Internationalism (see English tri-), ultimately from Latin tri-.


tri-

tri- + legal (“cool”) → trilegal (“awesome”)

(Rio Grande do Sul, colloquial) superior in quality or degree; super-


micro-

From Ancient Greek μικρός (mikrós, “small”).


mega-

Borrowed from Ancient Greek μέγας (mégas, “great, large, mighty”).

mega- (multiplication factor of one million)


ambi-

From Latin ambi- (“both”), from ambo (“both”).


hemi-

From Ancient Greek ἡμι- (hēmi-, “half”).


hexa-

From Latin hexa-, from Ancient Greek ἑξα- (hexa-), from ἕξ (héx, “six”).


tetra-

From Ancient Greek τέτταρες (téttares), τέσσαρες (téssares, “four”).


uni-

Learned borrowing from Latin ūni- (“uni-”), itself from Latin ūnus (“one”).


anti-

Borrowed from Ancient Greek ἀντί (antí, “against”).

bor+

(particle physics) anti- (related to antiparticles or antimatter)


mono-

Borrowed from Ancient Greek μόνος (mónos, “alone, only, sole, single”).


penta-

Borrowed from Ancient Greek πεντα- (penta-), combining form of πέντε (pénte, “five”). Doublet of cinco.


andro-

Borrowed from Ancient Greek ἀνδρός (andrós).


extra-

Learned borrowing from Latin extrā-, from extrā (“outside, beyond”).


bio-

Learned borrowing from Ancient Greek βίος (bíos). Doublet of zoo-.


tele-

Internationalism (see English tele-), ultimately from Ancient Greek τῆλε (têle).


necro-

From Ancient Greek νεκρός (nekrós, “dead”).


aero-

From Ancient Greek ἀέρος (aéros), the genitive singular of ἀήρ (aḗr, “air”). Doublet of ar.


homo-

From Ancient Greek ὁμός (homós, “same”).


re-

From Old Galician-Portuguese re-, from Latin re-.

re- + fazer (“to do”) → refazer (“to redo”)

re- (forms verbs indicating that the action is being done again)


neo-

Nova Zelândia (“New Zealand”) → neozelandês (“New Zealander”)

forms demonyms corresponding to placenames that contain novo or nova (“new”)


em-

forms verbs indicating motion or transformation into the prefixed noun; in-


endo-

Borrowed from Ancient Greek ἔνδον (éndon, “inner; internal”).


geo-

Borrowed from Ancient Greek γῆ (gê, “earth”).

geo- + climático → geoclimático

geo- + política → geopolítica


electro-

Pre-reform spelling (until Brazil 1943/Portugal 1990) of eletro-. Still used in countries where the agreement hasn't come into effect; may occur as a sporadic misspelling.


gastro-

Coined based on Ancient Greek γαστήρ (gastḗr, “stomach”).


dis-

Borrowed from Latin dis-. Compare the inherited des-.


dis-

Borrowed from New Latin dys-, from Ancient Greek δυσ- (dus-, “bad, hard”).

(medicine) dys- (forms the names of conditions characterised by difficult or inadequate function)


eco-

eco- (concerning ecology or the environment)


en-

From Old Galician-Portuguese en-, from Latin in-, prefixation of Latin in (“in, into”); compare em.


di-

Borrowed from Ancient Greek δίς (dís, “twice”).


e-

Alternative form of em- used before M and N

Alternative form of ex- (outward motion)


inter-

Learned borrowing from Latin inter-. Doublet of entre-.


mini-

mini- (denotes a small version of something)


proto-

From Ancient Greek πρωτο- (prōto-), combining form of πρῶτος (prôtos) "first", superlative of πρό (pró) "before".


arterio-

(anatomy, medicine) arterio- (relating to arteries)


amino-

(organic chemistry) amino- (of amines and the amino functional group)


super-

Learned borrowing from Latin super-. Doublet of sobre-

super- (superior in size, quality, number, degree, status, title or position)


iso-

From Ancient Greek ἴσος (ísos, “equal”).


meta-

Borrowed from Ancient Greek μετα- (meta-).


trans-

Borrowed from Latin trāns (“across, on the far side, beyond”). Doublet of trás, which was inherited.


neuro-

(anatomy) neuro- (relating to nerves or the nervous system)


meso-

meso- (located in or relating to the middle)


paleo-

Learned borrowing from Ancient Greek παλαιός (palaiós, “old”).


exo-

Borrowed from Ancient Greek ἔξω (éxō, “outer; external”).


apico-

(linguistics) apico- (articulated with the tip of the tongue)

(dentistry) apico- (related to the root of a tooth)


cosmo-

From Ancient Greek κόσμος (kósmos, “universe”).


oligo-

From Ancient Greek ὀλίγος (olígos, “few”).


demo-

From Ancient Greek δῆμος (dêmos, “people”).


apo-

(chemistry) apo- (derived from, or related to)

(biochemistry) apo- (the apoprotein form of the protein)


i-

Alternative form of in-, used before l, m and n.


macro-

From Ancient Greek μακρός (makrós, “long”).


des-

From Old Galician-Portuguese des-, from Latin dis-, from Proto-Indo-European *dwís.

des- + ligar (“to turn on”) → desligar (“to turn off”)

un-; de-; dis- (forms verbs indicating the reversal of the prefixed verb)

des- + amor (“love”) → desamor (“disdain”)

un- (forms nouns indicating the lack or opposite of the prefixed noun)


halo-

Borrowed from Ancient Greek ἅλς (háls, “salt”).


cardio-

Borrowed from Ancient Greek καρδία (kardía, “heart”).


angio-

(anatomy, medicine) angio- (relating to blood vessels or lymph vessels)


sino-

From Medieval Latin Sina (“China”), from Latin Sinae (“the Southern Chinese; Southern China”), from Ancient Greek Σῖναι (Sînai), q.v.

der

Relações sino-nipónicas


entre-

entre- + pôr (“to put”) → entrepor (“to put between”)

entre- + cena (“scene”) → entrecena (“interval between scenes”)

entre- + cortar (“to cut”) → entrecortar (“to cut in a grid”)

entre- + laçar (“to enlace”) → entrelaçar (“to interweave”)

entre- + abrir (“to open”) → entreabrir (“to open slightly”)

entre- + ver (“to see”) → entrever (“to catch a glimpse of”)


euro-

Euro- (pertaining to the European Union)


entomo-

Learned borrowing from Ancient Greek ἔντομος (éntomos, “dissected”).


foto-

Learned borrowing from Ancient Greek φωτός (phōtós), from φῶς (phôs, “light”).


mili-

milli- (SI prefix multiplying the unit by 10⁻³)


poli-

From Ancient Greek πολύς (polús, “many, much”).


psico-

From Ancient Greek ψυχή (psukhḗ, “soul”).


xilo-

Borrowed from Ancient Greek ξύλον (xúlon, “wood”).


crono-

Borrowed from Ancient Greek χρόνος (khrónos, “time”).


alo-

From Ancient Greek ἀλλο- (allo-), combining form of ἄλλος (állos, “other”).


anemo-

Borrowed from Ancient Greek ἄνεμος (ánemos, “wind”).


anto-

Borrowed from Ancient Greek ἄνθος (ánthos, “flower”).


anglo-

Anglo- (relating to England or the United Kingdom)

Anglo- (relating to the English language)


antropo-

Borrowed from Ancient Greek ἄνθρωπος (ánthrōpos).


glico-

From Ancient Greek γλυκύς (glukús, “sweet”).


morfo-

Borrowed from Ancient Greek μορφο- (morpho-) and -μορφος (-morphos), from μορφή (morphḗ, “form, shape”).


xanto-

Learned borrowing from Ancient Greek ξᾰνθός (xanthós, “yellow”).

lbor

xantho- (word formation element that expresses the idea of yellow, blond)


cromo-

Borrowed from Ancient Greek χρῶμα (khrôma).

bor+

(chemistry) chromo- (relating to chromium)


orto-

Borrowed from Ancient Greek ὀρθο- (ortho-), combining form of ὀρθός (orthós, “straight, upright”).


crio-

From Ancient Greek κρύος (krúos, “cold, frost, ice”).


termo-

From Ancient Greek θερμός (thermós, “warm, hot”).


pedo-

From Ancient Greek παῖς (paîs, “child”).


fono-

Borrowed from Ancient Greek φωνή (phōnḗ).

bor+

fonologia


piro-

From Ancient Greek πυρο- (puro-), combining form of πῦρ (pûr, “fire”).

pirotecnia


rino-

Borrowed from Ancient Greek ῥινός (rhinós), genitive of ῥίς (rhís, “nose”).


artro-

Borrowed from Ancient Greek ἄρθρον (árthron, “a joint”).

(biology, anatomy) arthro- (referring to a joint or articulation)


austro-

austro-húngaro
Austro-Hungarian


ciclo-

(chemistry) cyclo- (relating to or being a cyclic compound)


atmo-

Borrowed from Ancient Greek ἀτμός (atmós, “vapor, smoke, steam”).


argento-

(chemistry, mineralogy) argento- (relating to or containing silver)


cripto-

Borrowed from Ancient Greek κρυπτός (kruptós, “hidden, secret”).


etno-

Borrowed from Ancient Greek ἔθνος (éthnos).


eno-

From Ancient Greek οἶνος (oînos, “wine”).


fito-

Learned borrowing from Ancient Greek φυτόν (phutón, “plant”), from φύω (phúō, “to generate, to cause to grow”).


fisio-

From Ancient Greek φύσις (phúsis, “nature”).


geronto-

geronto- (Forms terms related to old age or the elderly)


greco-

Learned borrowing from Latin Graecus, from Ancient Greek [Term?].

mitologia greco-romana


sapro-

From Ancient Greek σαπρός (saprós, “putrid”).


teo-

From Ancient Greek θεό- (theó-, “god”), combining form of θεός (theós, “god”), from Proto-Indo-European *dʰh₁s-.


tras-

From Old Galician-Portuguese tras-, from Latin trāns-. Doublet of trans-.


luso-

From Lusitânia (“poetic name for Portugal”), from Latin Lūsitānia (“province of Roman Hispania”); and from luso (“Portuguese”), from Luso (“Lusus, supposed Roman god”), from Latin lūsum (“game”).

uder

luso-britânico
Anglo-Portuguese


actino-

Borrowed from Ancient Greek ἀκτῖνος (aktînos, “ray”).

bor+

(biology) actino- (having a radial form)


adipo-

(anatomy, medicine) adipo- (relating to fat)


hiper-

Learned borrowing from Ancient Greek ὑπέρ (hupér, “over”).

lbor

Coordinate term: super-

hiper- + atividade → hiperatividade (“hyperactivity”)


arseno-

(organic chemistry, mineralogy) arseno- (used to name compounds and minerals in which an element is replaced by arsenic)


vesico-

From Latin vēsīca (“bladder”). Doublet of bexiga.

(anatomy, medicine) vesico- (relating to the urinary bladder)


sobre-

Inherited from Latin super-. Doublet of super-.


arqui-

From Latin archi-, from Ancient Greek ἀρχι- (arkhi-, “first, chief”), from ἄρχω (árkhō, “to begin, to lead, to rule”).


abdomino-

abdomin-; abdomino- (relating to the abdomen)


ítalo-

ítalo-brasileiro


amelo-

(anatomy, dentistry) amelo- (relating to tooth enamel)


russo-

Russo- (relating to Russia or the Russian language)


ano-

(anatomy, medicine) ano- (pertaining to the anus)


oni-

onipresente

onívoro

Brazilian Portuguese standard spelling of omni-.


onico-

Borrowed from Ancient Greek ὄνυχος (ónukhos), from ὄνυξ (ónux, “claw, nail, hoof”).


icno-

Internationalism, from Ancient Greek ἴχνος (íkhnos, “footprint”).


alumin-

(chemistry) alumino- (indicating aluminium)


anarco-

anarcho- (denoting anarchy or anarchism)


ântero-

(anatomy, dentistry) antero- (anterior; in front; forward)


arco-

(trigonometry) arc- (forms the names of inverse trigonometric and hyperbolic functions)


quimio-

chemo- (relating to or using chemicals or chemistry)


Ode-

Borrowed from Arabic وَادٍ (wādin, “river”). Doublet of Guade-.

bor+

(no longer productive) a place-name prefix found in some river names and place names


ictio-

Borrowed from Ancient Greek ἰχθύς (ikhthús, “fish”).


viti-

Borrowed from Latin vītis (“grapevine”). Doublet of vide.


nipo-

From Japanese 日本 (Nippon), native name for Japan.

nipo-brasileiro
Japanese Brazilian


web-

(Internet slang, humorous) of, on, or through the Web, as opposing to the real life; virtually


pró-

From Latin prō (“in favour of, on behalf of”).


hipno-

hipno- + -logia → hipnologia

hipno- + terapia → hipnoterapia


plati-

From Ancient Greek πλατύς (platús). Doublet of chato and prato.

platy- (flat - forming scientific terms)


blefaro-

From Ancient Greek βλέφαρον (blépharon, “eyelid”)


X-

Back-formation from X-burguer, from English cheeseburger.

X- + salada (“salad”) → X-salada (“burger with salad”)

X- + tudo (“everything”) → X-tudo (“burger with everything”)

(informal, Brazil, cooking) Combined with a relevant filling to form the name of a burger or other food item.