Prefixes, Suffixes, and Combining Forms - Department of Education ...
Prefixes, Suffixes, and Combining Forms - Department of Education ...
Prefixes, Suffixes, and Combining Forms - Department of Education ...
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oro- 39<br />
-oyl<br />
oro- combining form Gk oros mountain : mountain orography<br />
orogenesis orophyte : elevation orometer<br />
oro- combining form L or-, os mouth : mouth oropharynx<br />
: mouth <strong>and</strong> or<strong>of</strong>acial<br />
orth- or ortho- combining form ME, fr. MF, straight, right,<br />
true, fr. L, fr. Gk, fr. orthos akin to Goth gawrisqan to bring<br />
fruit, Skt rdhva upright, high, vardhate he increases 1 a<br />
: straight : upright : vertical orthoceras orthal orthograde<br />
orthosymmetric b :exact : parallel orthodiagram<br />
ortho-cousin orthodome 2 :correct : corrective orthometry<br />
orthodontia 3 :an acid in the highest hydrated or<br />
hydroxylated form known either in the free state or in salts or<br />
esters orthoarsenic acid orth<strong>of</strong>ormic acid compare<br />
- 4b, - 2a 4 :derived from igneous rock in the<br />
name <strong>of</strong> a metamorphic rock orthogneiss orthosite compare<br />
-<br />
-ory n suffix - ME -orie, fr. L -orium, fr. neut. <strong>of</strong> -orius, adj.<br />
suffix : one that relates to or is used for: as a :place <strong>of</strong> or<br />
for reformatory observatory b :something that serves for<br />
crematory<br />
-ory adj suffix ME -orie, -oire, fr. MF L MF -orie -oire, fr.<br />
OF, fr. L -orius 1 :<strong>of</strong>, relating to, or characterized by observatory<br />
gustatory 2 :containing, involving, or conveying<br />
amendatory compulsory 3 :serving for, producing, or<br />
maintaining classificatory equilibratory justificatory<br />
oryct- or orycto- combining form NL, fr. Gk oryktos formed by<br />
digging, dug, verbal <strong>of</strong> orychein, oryssein to dig : fossil : mineral<br />
oryctology oryctognosy<br />
oryz- or oryzo- also oryzi- combining form NL, fr. L oryza rice,<br />
fr. Gk : rice oryzivorous Oryzomys<br />
-ose adj suffix ME, fr. L -osus : full <strong>of</strong> : having : possessing<br />
the qualities <strong>of</strong> cladose<br />
-ose n suffix - F, fr. glucose 1 :carbohydrate amylose esp<br />
: sugar fructose pentose 2 :primary hydrolysis product<br />
proteose<br />
-ose n suffix - NL -osis : - 4 chytridiose<br />
-oside n suffix - ISV -ose + -ide : glycoside or similar compound<br />
ganglioside heteroside compare - 2b<br />
-osis n suffix, pl -oses or -osises ME, fr. L, fr. Gk -sis, fr. --<br />
medial vowel characteristic <strong>of</strong> derivatives <strong>of</strong> certain verbs +<br />
-sis 1 a : action : process : condition hypnosis b :abnormal<br />
or diseased condition leukosis 2 :increase : formation<br />
leukocytosis 3 : arrangement pterylosis 4 NL, fr. L<br />
: disease caused by a specified fungus chytridiosis<br />
osm- or osmo- combining form NL, fr. Gk osm-, fr. osm 1<br />
: odor : smell Osmorhiza 2 a : osmium osmic b osmo-<br />
: osmous osmocyanide<br />
-osma n combining form NL, fr. Gk osm : one having such an<br />
odor in generic names <strong>of</strong> plants Barosma Coprosma<br />
osmo- combining form osmose : osmosis : osmotic osmometer<br />
-osphresia also -osphrasia n combining form - NL, fr. Gk<br />
osphrsis sense <strong>of</strong> smell Gk osphrasia odor akin to Gk<br />
ozein to smell : sense <strong>of</strong> smell anosphresia anosphrasia<br />
osse- or osseo- combining form L osse- in osseus 1 :bone<br />
ossein 2 :osseous <strong>and</strong> osseocartilaginous<br />
ossi- combining form L, fr. oss-, os : bone ossific<br />
-ost n combining form - Gk osteon : bone actinost<br />
oste- or osteo- combining form NL, fr. Gk, fr. osteon : bone<br />
osteal osteomyelitis<br />
osteochondr- or osteochondro- combining form ISV oste- +<br />
chondr- : bone <strong>and</strong> cartilage osteochondropathy<br />
osteochrondrous<br />
-osteon n combining form - NL, fr. Gk osteon bone : bone<br />
: bone part lophosteon<br />
-osteus n combining form NL, fr. Gk osteon bone : one having<br />
such a bone or bones in generic names esp. <strong>of</strong> fishes<br />
Coccosteus<br />
-ostosis n combining form, pl -ostoses or -ostosises NL, fr.<br />
Gk -ostsis, fr. osteon bone + -sis -osis : ossification <strong>of</strong> a<br />
specified part or to a specified degree hyperostosis<br />
ectostosis<br />
ostrac- or ostraco- combining form NL, fr. Gk ostrak-, ostrako-,<br />
fr. ostrakon : shell Ostracoidea Ostracophori<br />
-ostraca n pl combining form NL, fr. Gk -ostraka neut. pl. <strong>of</strong><br />
-ostrakos, fr. ostrakon shell : ones having such a shell in<br />
names <strong>of</strong> taxa chiefly <strong>of</strong> crustaceans Arthrostraca<br />
Conchostraca<br />
ostre- or ostrei- or ostreo- combining form L ostre-, fr. ostrea<br />
: oyster ostreiform ostreoid ostreophagous<br />
ot- or oto- combining form Gk t-, to-, fr. t-, ous : ear otitis<br />
otology otoscope otosteal : ear <strong>and</strong> otolaryngology<br />
-ote n suffix - L Gk L -otes, fr. Gk -ts : inhabitant<br />
: native Capriote<br />
-otic adj suffix Gk -tikos, fr. -tos, suffix used to form adjectives<br />
derived fr. certain verbs -ts, suffix used to form<br />
agent nouns derived fr. certain verbs + -ikos -ic 1 a : <strong>of</strong>, relating<br />
to, or characterized by a specified action, process, or<br />
condition holocoenotic b :having an abnormal or diseased<br />
condition <strong>of</strong> a specified kind aphosphorotic 2 :showing<br />
an increase or a formation <strong>of</strong> something specified leukocytotic<br />
3 :<strong>of</strong>, relating to, or characterized by having a disease<br />
caused by a specified fungus blastomycotic <strong>of</strong>ten used<br />
to form adjectives corresponding to nouns in -osis<br />
-otic adj combining form Gk tikos <strong>of</strong> the ear 1 :<strong>of</strong> or relating<br />
to a specified part <strong>of</strong> the ear epiotic entotic 2 a : <strong>of</strong><br />
or relating to an area having a specified spatial relationship<br />
to the ear parotic periotic b :<strong>of</strong> or relating to a bone having<br />
a specified spatial relationship to the ear prootic<br />
sphenotic<br />
-ous adj suffix ME, partly fr. OF -ous, -os, -eus, -eux, fr. L<br />
-osus partly fr. L -us final portion <strong>of</strong> the nom. sing. masc.<br />
form <strong>of</strong> adjectives such as fatuus foolish, fuscus brown 1<br />
: full <strong>of</strong> : abounding in : having : possessing the qualities <strong>of</strong><br />
clamorous glamorous cystous lymphous 2 :having a<br />
valence lower than in compounds or ions named with an<br />
adjective ending in -ic ferrousiron sulfurousacid compare<br />
- -ously adv suffix<br />
out- prefix ME, fr. out, adv. : in a manner that goes beyond,<br />
surpasses, or excels outdance outfight outrun outbluff<br />
outmaneuver<br />
ov- or ovi- or ovo- combining form L ov-, ovi-, fr. ovum 1 a<br />
: egg ovejector oviform ovomucoid b :ovum ovocyte<br />
ovogenesis 2 :ovally ovo-elliptic<br />
ovari- or ovario- also ovar- combining form NL, fr. ovarium 1<br />
: ovary ovaritis ovariectomy ovariotomy 2 :ovarian<br />
<strong>and</strong> ovario-abdominal<br />
ox- or oxo- combining form F, fr. oxygène oxygen : containing<br />
oxygen esp. in the names <strong>of</strong> various cyclic compounds<br />
oxazole<br />
ox- combining form by shortening : - oxamide<br />
oxa- or ox- combining form ISV, fr. ox- + -a- : containing oxygen<br />
in place <strong>of</strong> carbon or regarded as in place <strong>of</strong> carbon usu.<br />
in place <strong>of</strong> the methylene group CH 10H-9-oxaanthracene<br />
oxazacycloheptane compare -, oxal-<br />
or oxalo- combining form F, fr. acide oxalique oxalic<br />
acid : related to oxalic acid oxalamide oxalosuccinic<br />
oxido- combining form ISV, fr. oxide 1 :oxide specif : -<br />
in names <strong>of</strong> organic chemical compounds oxidoethane 2<br />
: oxidation oxidoreduction<br />
oxo- combining form ox- : containing oxygen as a doubly<br />
coordinated group dioxouranium VI UO ++ <br />
oxy- combining form ME, fr. L, fr. Gk, fr. oxys akin to Gk<br />
achn chaff 1 :sharp : keen : pointed : acute oxyaster<br />
oxycephaly oxydactyl oxyrhynchous 2 :quick oxytocic<br />
3 :acid oxyphytic oxyphile<br />
oxy- combining form F, fr. oxygène oxygen 1 a : containing<br />
oxygen or additional oxygen oxycellulose oxyhemoglobin<br />
b:containing oxygen in the form <strong>of</strong> an oxide oxychloride<br />
2:- not used systematically oxynaphthoic 3<br />
: <strong>of</strong> oxygen <strong>and</strong> oxyhydrogen<br />
-oyl n combining form - ISV -o- as in -oic + -yl : acid radical<br />
used in the system <strong>of</strong> nomenclature adopted by the
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