marsupicarnivores
plural of marsupicarnivore

marudi
A large, tree-dwelling bird, of the genus Penelope, native to Guyana

marudis
plural of marudi

masacuate
The boa constrictor.

masago
capelin roe

masarid
Any member of the vespoid subfamily Masarinae of the family Vespidae, formerly its own family, Masaridae.

masarids
plural of masarid

masculonuclei
plural of masculonucleus

masculonucleus
The male pronucleus.

maskinonge
Alternative form of muskellunge.

maskinonges
plural of maskinonge

mason
A bricklayer, one whose occupation is to build with stone or brick.
One who prepares stone for building purposes.
A member of the fraternity of Freemasons. See Freemason.

masonary
Misspelling of masonry.

masons
plural of mason

massasauga
The rattlesnake Sistrurus catenatus (formerly Crotalinus catenatus) in the family Viperidae, found in three subspecies.

massasaugas
plural of massasauga

mastage
The season for feeding animals on mast (kind of fruit).
The right to feed animals on mast in a particular area.

mastigophoran
Any member of superclass Mastigophora of protozoa.
Any member of the genus Mastigophora of liverworts.

mastigophorans
plural of mastigophoran

mastigopod
A member of the Mastigopoda (protozoans which possess cilia or flagella).

mastigopods
plural of mastigopod

mastigoteuthid
Any squid in the family Mastigoteuthidae.

mastigoteuthids
plural of mastigoteuthid

mastigure
Any of the spiny-tailed lizards of the genus Uromastyx.

mastigures
plural of mastigure

mastodonsaur
Any member of the Mastodonsauridae family or Mastodonsaurus genus of amphibians.

mastodonsaurs
plural of mastodonsaur

mastotermitid
Any termite of the family Mastotermitidae.

mastotermitids
plural of mastotermitid

mata mata
Alternative form of matamata.

matamata
A side-necked turtle of species Chelus fimbriata, whose shell resembles a dead leaf.

matamatas
plural of matamata

mathlete
A member of the math team of a primary school or secondary school.

mathletes
plural of mathlete

matje
Alternative form of maatje.

matjes
plural of matje

matki
The plant Vigna aconitifolia, moth bean.

matkis
plural of matki

matrotroph
Any matrotrophic organism.

matrotrophs
plural of matrotroph

matties
plural of mattie

mattowacca
Synonym of hickory shad.

maurotoxin
A neurotoxin created by the Tunisian large-clawed scorpion.

maurotoxins
plural of maurotoxin

mawk
A maggot.
A slattern.

mawks
plural of mawk
hands

maxillopod
Any member of the class Maxillopoda of diverse crustaceans including barnacles and copepods.

mayfish
A striped killifish (Fundulus majalis).

mayfishes
plural of mayfish

mazuku
A pocket of carbon-dioxide-rich air that accumulates near the ground and can be lethal to humans and animals.

mazukus
plural of mazuku

mbalolo
palolo worm

meagres
plural of meagre

meathead
An ungainly, dull, or stupid person; someone who is lazy, disrespectful, and/or whose beliefs and philosophies clash with those of another.
A large, muscular, stupid man, especially an athlete.
A member of the Canadian Forces Military Police.

meatheads
plural of meathead

meatpacking
The slaughter and further processing of animals for meat.

mechanoceptor
Alternative form of mechanoreceptor.

mechanoceptors
plural of mechanoceptor

mechanoreceptor
any receptor that provides an organism with information about mechanical changes in its environment, such as movement, tension and pressure

mechanoreceptors
plural of mechanoreceptor

medaka
Oryzias latipes, a small Japanese ricefish, popular for use in aquariums.

medakas
plural of medaka

mediacrat
A member of the mediacracy.

mediacrats
plural of mediacrat

medialuna
A crescent-shaped corral used in Chilean rodeos.
A kind of Argentinian croissant.

medialunas
plural of medialuna

mediapeople
plural of mediaperson

mediaperson
A member of the media.

mediapersons
plural of mediaperson

medifurca
mesofurca

medifurcae
plural of medifurca

mediot
A member of the media; a journalist, especially one who makes inaccurate claims in articles.

mediotergite
A broad convex area on the posterior end of the insect thorax between the subscutellum and the base of the abdomen

mediotergites
plural of mediotergite

mediots
plural of mediot

medlicottiid
Any ammonite in the family Medlicottiidae.

medlicottiids
plural of medlicottiid

medusafish
Any of the family Centrolophidae of perciform fish, often found in association with jellyfish.

medusafishes
plural of medusafish

medusian
A jellyfish, especially those of the former genus Medusa.

medusians
plural of medusian

medusozoan
Any of the subphylum Medusozoa of jellyfish.

medusozoans
plural of medusozoan

meezer
A Siamese cat.
The distinctive low-pitched meow of a Siamese cat.

meezers
plural of meezer.

megabat
Any of the bats in the suborder Yinpterochiroptera; a fruit bat.

megablockbusters
plural of megablockbuster

megacarnivore
A relatively large carnivore

megacarnivores
plural of megacarnivore

megachilid
Any of the family Megachilidae of mostly solitary bees whose scopa is restricted to the ventral surface of the abdomen.

megachilids
plural of megachilid

megacoasters
plural of megacoaster

megaderm
Any of several species of Old World blood-sucking bats of the genus Megaderma; the false vampire bat.

megadermatid
Any bat in the family Megadermatidae.

megadermatids
plural of megadermatid

megaderms
plural of megaderm

megadrile
A terrestrial oligochaete (worm of the superorder Megadrilacea in class Oligochaeta)

megadriles
plural of megadrile

megafelid
big cat

megafelids
plural of megafelid

megafish
Any fish belonging to the megafauna.

megafishes
plural of megafish

megafossil
A relatively large fossil showing the structure of an organism.

megafossils
plural of megafossil

megafrugivore
A relatively large frugivore

megafrugivores
plural of megafrugivore

megagnathia
macrognathia

megaherbivore
Any very large herbivore, typically one weighing more than 1000 kg

megaherbivores
plural of megaherbivore

megalodontesid
Any of the wood wasps in the family Megalodontesidae

megalodontesids
plural of megalodontesid

megalodontid
Synonym of megalodontesid.
Any of the extinct bivalves in the family Megalodontidae.

megalodontids
plural of megalodontid

megalosauri
plural of megalosaurus

megalosauruses
plural of megalosaurus

megalurid
Any warbler in the family Megaluridae, a synonym for the Locustellidae.

megalurids
plural of megalurid

megamammal
A very large mammal, especially an extinct one.

megamammals
plural of megamammal

megamerinid
Any member of the Megamerinidae.

megamerinids
plural of megamerinid

megamouth
The megamouth shark.

megamouths
plural of megamouth

meganuclei
plural of meganucleus

meganucleus
macronucleus

megaraptor
A member of the genus Megaraptor of large theropod dinosaurs that lived in the Turonian to Coniacian ages of the Late Cretaceous.

megaraptors
plural of megaraptor

megararities
plural of megararity

megararity
An extremely rare bird for a particular locality.

megascolecines
plural of megascolecine

megashark
A very large shark.

megasharks
plural of megashark

megathere
An extinct, gigantic, ground sloth (Megatherium americanum) that flourished in South America during the Pleistocene epoch.
A member of the family Megatheriidae

megatheres
plural of megathere

megatherioids
plural of megatherioid

megavertebrate
An especially large vertebrate.

megavertebrates
plural of megavertebrate

megrim
A headache; a migraine.
A fancy, a whim, a caprice.
See megrims (“depression; any of various diseases of animals”).

megrims
Chiefly preceded by the: depression, low spirits, unhappiness.
Any of various diseases of animals, especially horses, marked by a disturbance of equilibrium and abnormal gait and behaviour such as staggers or a sudden vertigo, sometimes followed by unconsciousness; the staggers.

meiogenesis
Causation of meiosis.

meiogynogenesis
meiotic gynogenesis

meiolaniid
Any of the extinct armoured land turtles of the family †Meiolaniidae.