Nouns

oort

noun

Dutch astronomer who proved that the galaxy is rotating and...

opacification

noun

the process of becoming cloudy or opaque

opalescence

noun

the visual property of something having a milky brightness a...

opcw

noun

international organization for chemical disarmament; adminis...

openbill

noun

stork with a grooved bill whose upper and lower parts touch...

openhandedness

noun

liberality in bestowing gifts; extremely liberal and generou...

opepe

noun

large African forest tree yielding a strong hard yellow to g...

operagoer

noun

a patron of the opera

operationalism

noun

(philosophy) the doctrine that the meaning of a proposition...

operoseness

noun

the quality of requiring extended effort

opheodrys

noun

North American green snakes

ophidia

noun

snakes

ophidiidae

noun

eellike marine fishes

ophidism

noun

poisoning by snake venom

ophiodon

noun

a genus of Ophiodontidae

ophiodontidae

noun

fishes closely related to greenlings

ophioglossaceae

noun

a family of succulent ferns of order Ophioglossales; cosmopo...

ophioglossales

noun

coextensive with the family Ophioglossaceae

ophioglossum

noun

the type genus of the fern family Ophioglossaceae

ophiophagus

noun

king cobra

ophisaurus

noun

glass lizards

ophiuchus

noun

a large constellation in the equatorial region between Hercu...

ophiurida

noun

brittle stars

ophiuroidea

noun

brittle stars and basket stars

ophryon

noun

the craniometric point in the midline of the forehead immedi...

ophrys

noun

a hardy genus of terrestrial orchids of Europe and northern...

ophthalmectomy

noun

surgical removal of an eye

ophthalmoplegia

noun

paralysis of the motor nerves of the eye

opiliones

noun

harvestmen

opisthobranchia

noun

gastropods having the gills when present posterior to the he...

opisthocomidae

noun

comprising the hoatzins

opisthocomus

noun

type genus of the Opisthocomidae: hoatzins

opisthognathidae

noun

jawfishes

opisthorchiasis

noun

infestation with flukes obtained from eating raw fish; commo...

opisthotonos

noun

severe spasm in which the back arches and the head bends bac...

opopanax

noun

an odorous gum resin formerly used in medicines

opportuneness

noun

timely convenience

opposer

noun

someone who offers opposition

oppositeness

noun

the relation between opposed entities

oppressiveness

noun

a feeling of being oppressed

opsonisation

noun

process whereby opsonins make an invading microorganism more...

opsonization

noun

process whereby opsonins make an invading microorganism more...

optez

noun

an artificial language

optimisation

noun

the act of rendering optimal

opuntiales

noun

coextensive with the family Cactaceae: cactuses

opv

noun

an oral vaccine (containing live but weakened poliovirus) th...

oradexon

noun

a corticosteroid drug (trade names Decadron or Dexamethasone...

orangeness

noun

orange color or pigment; any of a range of colors between re...

orangutang

noun

large long-armed ape of Borneo and Sumatra having arboreal h...

orasone

noun

a dehydrogenated analogue of cortisol (trade names Orasone o...