| acanthopterygian | (noun) a teleost fish with fins that are supported by sharp inflexible rays | Synonyms: spiny-finned fish |
|---|
| adapter | (noun) device that enables something to be used in a way different from that for which it was intended or makes different pieces of apparatus compatible | Synonyms: adaptor |
|---|
| (noun) a musician who adapts a composition for particular voices or instruments or for another style of performance | Synonyms: arranger, transcriber |
| adopter | (noun) a person who adopts a child of other parents as his or her own child | Synonyms: adoptive parent |
|---|
| amethopterin | (noun) toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis | Synonyms: methotrexate, methotrexate sodium |
|---|
| angiopteris | (noun) highly variable species of very large primitive ferns of the Pacific tropical areas with high rainfall | Synonyms: Angiopteris evecta, giant fern |
|---|
| anomalopteryx | (noun) the smallest moa; slender moa about the size of a large turkey | Synonyms: Anomalopteryx oweni |
|---|
| apteryx | (noun) nocturnal flightless bird of New Zealand having a long neck and stout legs; only surviving representative of the order Apterygiformes | Synonyms: kiwi |
|---|
| archaeopteryx | (noun) extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds | Synonyms: Archaeopteryx lithographica, archeopteryx |
|---|
| archeopteryx | (noun) extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds | Synonyms: archaeopteryx, Archaeopteryx lithographica |
|---|
| attempter | (noun) one who tries | Synonyms: essayer, trier |
|---|
| calypter | (noun) scalelike structure between the base of the wing and the halter of a two-winged fly | Synonyms: alula |
|---|
| chapter | (noun) a subdivision of a written work; usually numbered and titled | - |
|---|
| (noun) a series of related events forming an episode | - |
| (noun) a local branch of some fraternity or association | - |
| (noun) an ecclesiastical assembly of the monks in a monastery or even of the canons of a church | - |
| (noun) any distinct period in history or in a person's life | - |
| chapterhouse | (noun) a house used as a residence by a chapter of a fraternity | Synonyms: frat house, fraternity house |
|---|
| (noun) a building attached to a monastery or cathedral; used as a meeting place for the chapter | - |
| chiropteran | (noun) nocturnal mouselike mammal with forelimbs modified to form membranous wings and anatomical adaptations for echolocation by which they navigate | Synonyms: bat |
|---|
| crossopterygian | (noun) any fish of the order Crossopterygii; most known only in fossil form | Synonyms: lobe-finned fish, lobefin |
|---|
| diopter | (noun) a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists | Synonyms: dioptre |
|---|
| dipteran | (noun) insects having usually a single pair of functional wings (anterior pair) with the posterior pair reduced to small knobbed structures and mouth parts adapted for sucking or lapping or piercing | Synonyms: dipteron, dipterous insect, two-winged insects |
|---|
| dipterocarp | (noun) tree of the family Dipterocarpaceae | - |
|---|
| dipteron | (noun) insects having usually a single pair of functional wings (anterior pair) with the posterior pair reduced to small knobbed structures and mouth parts adapted for sucking or lapping or piercing | Synonyms: dipteran, dipterous insect, two-winged insects |
|---|
| ephemeropteran | (noun) short-lived insect | Synonyms: ephemerid |
|---|
| eurypterid | (noun) large extinct scorpion-like arthropod considered related to horseshoe crabs | - |
|---|
| helicopter | (noun) an aircraft without wings that obtains its lift from the rotation of overhead blades | Synonyms: chopper, eggbeater, whirlybird |
|---|
| hemipteran | (noun) insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis | Synonyms: bug, hemipteron, hemipterous insect |
|---|
| hemipteron | (noun) insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis | Synonyms: bug, hemipteran, hemipterous insect |
|---|
| homopteran | (noun) insects having membranous forewings and hind wings | Synonyms: homopterous insect |
|---|
| hymenopter | (noun) insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing | Synonyms: hymenopteran, hymenopteron, hymenopterous insect |
|---|
| hymenopteran | (noun) insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing | Synonyms: hymenopter, hymenopteron, hymenopterous insect |
|---|
| hymenopteron | (noun) insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing | Synonyms: hymenopter, hymenopteran, hymenopterous insect |
|---|
| interrupter | (noun) a device for automatically interrupting an electric current | - |
|---|
| lecanopteris | (noun) any of several bizarre ferns of the genus Lecanopteris having swollen hollow rhizomes that provide homes for symbiotic ants | - |
|---|
| lepidopteran | (noun) insect that in the adult state has four wings more or less covered with tiny scales | Synonyms: lepidopteron, lepidopterous insect |
|---|
| lepidopterist | (noun) an entomologist who specializes in the collection and study of butterflies and moths | Synonyms: butterfly collector, lepidopterologist |
|---|
| lepidopterologist | (noun) an entomologist who specializes in the collection and study of butterflies and moths | Synonyms: butterfly collector, lepidopterist |
|---|
| lepidopterology | (noun) the branch of entomology dealing with Lepidoptera | Synonyms: lepidoptery |
|---|
| lepidopteron | (noun) insect that in the adult state has four wings more or less covered with tiny scales | Synonyms: lepidopteran, lepidopterous insect |
|---|
| lepidoptery | (noun) the branch of entomology dealing with Lepidoptera | Synonyms: lepidopterology |
|---|
| malacopterygian | (noun) any fish of the superorder Malacopterygii | Synonyms: soft-finned fish |
|---|
| mecopteran | (noun) any of various carnivorous insects of the order Mecoptera | - |
|---|
| neuropteran | (noun) insect having biting mouthparts and four large membranous wings with netlike veins | Synonyms: neuropteron, neuropterous insect |
|---|
| neuropteron | (noun) insect having biting mouthparts and four large membranous wings with netlike veins | Synonyms: neuropteran, neuropterous insect |
|---|
| ornithopter | (noun) heavier-than-air craft that is propelled by the flapping of wings | Synonyms: orthopter |
|---|
| orthopter | (noun) heavier-than-air craft that is propelled by the flapping of wings | Synonyms: ornithopter |
|---|
| orthopteran | (noun) any of various insects having leathery forewings and membranous hind wings and chewing mouthparts | Synonyms: orthopteron, orthopterous insect |
|---|
| orthopteron | (noun) any of various insects having leathery forewings and membranous hind wings and chewing mouthparts | Synonyms: orthopteran, orthopterous insect |
|---|
| pecopteris | (noun) Carboniferous fossil fern characterized by a regular arrangement of the leaflets resembling a comb | - |
|---|
| plecopteran | (noun) primitive winged insect with a flattened body; used as bait by fishermen; aquatic gilled larvae are carnivorous and live beneath stones | Synonyms: stone fly, stonefly |
|---|
| prompter | (noun) a device that displays words for people to read | Synonyms: autocue |
|---|
| (noun) someone who assists a performer by providing the next words of a forgotten speech | Synonyms: theater prompter |
| pteridologist | (noun) an expert in the study of ferns | - |
|---|
| pteridology | (noun) the branch of botany that studies ferns | - |
|---|
| pteridophyte | (noun) plants having vascular tissue and reproducing by spores | Synonyms: nonflowering plant |
|---|
| pteridosperm | (noun) an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae) | Synonyms: seed fern |
|---|
| pterion | (noun) the craniometric point in the region of the sphenoid fontanelle | - |
|---|
| pterodactyl | (noun) extinct flying reptile | - |
|---|
| pteropogon | (noun) southern Australian plant having feathery hairs surrounding the fruit | Synonyms: Pteropogon humboltianum |
|---|
| pterosaur | (noun) an extinct reptile of the Jurassic and Cretaceous having a bird-like beak and membranous wings supported by the very long fourth digit of each forelimb | Synonyms: flying reptile |
|---|
| pterygium | (noun) either of two thickened triangular layers of conjunctiva extending from the nasal edge of the eye to the cornea; it arises from irritation of the pinguecula | - |
|---|
| scepter | (noun) a ceremonial or emblematic staff | Synonyms: sceptre, verge, wand |
|---|
| (noun) the imperial authority symbolized by a scepter | Synonyms: sceptre |
| stenopterygius | (noun) an ichthyosaur of the genus Stenopterygius | Synonyms: Stenopterygius quadrisicissus |
|---|
| sumpter | (noun) an animal (such as a mule or burro or horse) used to carry loads | Synonyms: pack animal |
|---|
| tempter | (noun) a person who tempts others | - |
|---|
| thyrsopteris | (noun) a terrestrial tree fern of South America | Synonyms: Thyrsopteris elegans |
|---|
| thysanopter | (noun) an insect of the order Thysanoptera | Synonyms: thysanopteron, thysanopterous insect |
|---|
| thysanopteron | (noun) an insect of the order Thysanoptera | Synonyms: thysanopter, thysanopterous insect |
|---|
| trichopteran | (noun) caddis fly | Synonyms: trichopteron, trichopterous insect |
|---|
| trichopteron | (noun) caddis fly | Synonyms: trichopteran, trichopterous insect |
|---|