outerweb
(of a plumage) an outer web

outerwebs
plural of outerweb

outgrade
A fruit, vegetable, animal, etc. that fails to meet criteria set by a retailer.

outgrades
plural of outgrade

outgrouper
A member of an outgroup

outgroupers
plural of outgrouper

outhalf
fly-half

outhalves
plural of outhalf

ouzel
A Eurasian blackbird (Turdus merula).
A water ouzel, an aquatic perching bird (Cinclus mexicanus).

ouzels
plural of ouzel

ovariole
a tubular component of the insect ovary, a basic unit of egg production

ovarioles
plural of ovariole

overhair
The long hair overlying the fur of many animals.

overhairs
plural of overhair

overo
A pinto horse with white-over-dark body markings.

overos
plural of overo

overwhaling
Too much whaling, causing steep declines in whale populations.

oviculture
The rearing and care of sheep.

ovijector
The muscular part of the oviduct of a nematode that propels the egg through the genital pore

ovijectors
plural of ovijector

ovination
The inoculation of sheep with ovine virus against sheeppox.

ovinization
Synonym of clavelization (“inoculation of an animal against sheeppox”).

ovipary
The laying of eggs by an animal.

ovoo
A shamanistic cairn found in Mongolia, usually made from rocks or wood and found on or around mountains.

ovoos
plural of ovoo

ovophile
A mouthbrooding member of the fish family Cichlidae.

ovophiles
plural of ovophile

ovulator
An animal that ovulates (typically, in a specified manner)

ovulators
plural of ovulator

ovum
The female gamete in animals; the egg cell.

oweness
Eggcorn of onus; the condition of being obligated or responsible for something.

owlbear
A monstrous creature resembling a bear with a beak.

owlbears
plural of owlbear

owlet
Diminutive of owl.
A young owl; owling.
One of a species of small owls, such as Athene noctua.
An owlet moth.

owlets
plural of owlet

owlsona
A fursona that is an owl.

owlsonas
plural of owlsona

oxeia
Alternative spelling of oxia.

oxeiai
plural of oxeia

oxeye herring
Synonym of Indo-Pacific tarpon.

oxflies
plural of oxfly

oxfly
gadfly

oxia
An Ancient Greek pitch-marking diacritic: ⟨ ´ ⟩; written atop vowels, it denotes high pitch on short vowels, and rising pitch on long vowels and diphthongs.

oxiae
plural of oxia

oxyconformer
An organism that displays oxyconformity.

oxyconformers
plural of oxyconformer

oxynoticeratid
Any ammonite in the family Oxynoticeratidae.

oxynoticeratids
plural of oxynoticeratid

oxyphile
Any oxyphilic organism.

oxyregulation
The regulation of oxygen in animals and plants

oxyuricide
Any anthelmintic that is destructive to worms of the genus Oxyuris, or pinworms.

oxyuricides
plural of oxyuricide

oyster cracker
A small, dry, usually round or hexagonal cracker.

oystershell
The shell of an oyster.

oystershells
plural of oystershell

ozobranchid
Any turtle leech of the family Ozobranchidae

ozobranchids
plural of ozobranchid

pachyceratid
Any member of the Pachyceratidae.

pachyceratids
plural of pachyceratid

pachyderm
A member of the obsolete taxonomic order Pachydermata, grouping of thick-skinned, hoofed animals such as the rhinoceros, hippopotamus, elephant and tapir.
An elephant.
A person with thick skin; someone who is not affected by or does not care what others say about them.
Someone who is insensitive.

pachyderms
plural of pachyderm

pachypleurosaur
A primitive sauropterygian reptile of the Triassic period, vaguely resembling aquatic lizards.

pachypleurosaurs
plural of pachypleurosaur

pachypod
Any of a group of animals with thick feet.

pachypods
plural of pachypod

pachyptile
Any seabird in the genus Pachyptila.

packmate
A member of the same pack (social group).

packmates
plural of packmate

packmule
A mule used as a pack animal

packmules
plural of packmule

packsaddle
A saddle designed to secure and carry goods on the back of an animal.

packsaddles
plural of packsaddle

packway
A path, as over mountains, followed by pack animals.

packways
plural of packway

pacu
Any of certain freshwater fish of the family Serrasalmidae, endemic to South America; they are characterised by squarish, human-like teeth and a mainly herbivorous diet.

pacus
plural of pacu

paddlecock
The lumpfish.

paddlefeet
plural of paddlefoot

paddlefish
Any of several primitive fish, of the family Polyodontidae, that have a long snout shaped like a paddle.

paddlefishes
plural of paddlefish

paddlefoot
A member of the groundcrew.

paddybird
The Indian pond heron (Ardeola grayii)

paddybirds
plural of paddybird.

padnag
An ambling nag (horse).

padnags
plural of padnag

padwal
A snake gourd.

padwals
plural of padwal

paedomorphy
The retention or emergence of juvenile characteristics in an adult organism.

paedophage
An organism that eats or consumes the young of other species.

paedophages
plural of paedophage

paenungulate
Any animal of the clade Paenungulata.

paenungulates
plural of paenungulate

paeon
A foot containing any pattern of three short syllables and one long syllable.

paeons
plural of paeon

pagina
The surface of a leaf or of a flattened thallus.

paginae
plural of pagina

paguroid
Any hermit crab of the superfamily Paguroidea

paguroids
plural of paguroid

pahmi
The ferret-badger.
A ferret-badger skin.

pahmis
plural of pahmi

painted comber
Serranus scriba, a sea bass found in the eastern Atlantic Ocean, the Mediterranean Sea, and the Black Sea.

painted turtle
A common American freshwater turtle (Chrysemys picta), with red, orange and yellow markings.

painted turtles
plural of painted turtle

paiock
Alternative spelling of pajock.

paiocke
Alternative spelling of pajock.

pajahuello
The tick Ornithodoros coriaceus.

pajahuellos
plural of pajahuello

pajama cardinalfish
A small marine fish (up to 8.5 cm) of the Indo-Pacific, Sphaeramia nematoptera, usually found near coral reefs, popular as an aquarium fish.

pajock
A peacock, a male peafowl, noted for its large and extravagantly coloured tail.
savage, degenerate

pajocke
Alternative spelling of pajock.

pajocks
plural of pajock

pakicetid
Any of a group of extinct mammals of the family †Pakicetidae.

pakicetids
plural of pakicetid

paladin
A heroic champion, especially a knight.
A defender or advocate of a noble cause.
Any of the twelve Companions of the court of Emperor Charlemagne.

paladins
plural of paladin

palaeichthyology
Alternative form of palaeoichthyology.

palaemoid
Any shrimp of the superfamily Palaemonoidea

palaemoids
plural of palaemoid

palaemonid
Any member of the species of family Palaemonidae.

palaemonids
plural of palaemonid

palaemonoid
Any shrimp of the superfamily Palaemonoidea

palaemonoids
plural of palaemonoid

palaeobiogeography
Alternative form of paleobiogeography.

palaeobiomechanics
The application of biomechanics to prehistoric times

palaeoburrow
Alternative form of paleoburrow.

palaeoburrows
plural of palaeoburrow

palaeochiropterygid
Any member of the Palaeochiropterygidae.

palaeochiropterygids
plural of palaeochiropterygid

palaeocopid
Any ostracod of the order †Palaeocopida.

palaeofauna
Alternative form of paleofauna.

palaeohabitat
Alternative form of paleohabitat.

palaeohabitats
plural of palaeohabitat

palaeoichthyology
The scientific study of prehistoric fish.

palaeomigration
An ancient migration (human or animal)

palaeomigrations
plural of palaeomigration

palaeomodeling
The modeling of organism distributions in prehistoric times

palaeoneuroanatomy
Alternative form of paleoneuroanatomy.

palaeoneurology
Alternative form of paleoneurology.

palaeophysiology
Alternative form of paleophysiology.

palaeopteran
Any winged insect of the division Palaeoptera

palaeopterans
plural of palaeopteran

palaeosaur
Any of various prehistoric animals that have been named Palaeosaurus.

palaeosaurs
plural of palaeosaur

palaeozoogeography
Alternative form of paleozoogeography.

palata
A Burmese flatbread, also known as paratha.

palatas
plural of palata