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There are 21 words containing OPTIL

anthracoptilid — n. (Zoology) Any member of the extinct insect family Anthracoptilidae.
anthracoptilids — n. Plural of anthracoptilid.
clinoptilolite — n. (Mineralogy) A natural zeolite comprising a microporous arrangement…
clinoptilolites — n. Plural of clinoptilolite.
coleoptilar — adj. Relating to a coleoptile.
coleoptile — n. (Botany) A pointed sheath that protects the emerging shoot…
coleoptiles — n. Plural of coleoptile.
hydroptilid — n. (Zoology) Any caddis fly in the family Hydroptilidae.
hydroptilids — n. Plural of hydroptilid.
hypoptila — n. Plural of hypoptilum.
hypoptilum — n. (Ornithology, rare) An aftershaft.
mesoptile — n. (Biology) one of the second set of down feathers (in those…
mesoptiles — n. Plural of mesoptile.
neoptile — n. The down or light, fluffy feathers on a young bird.
neossoptile — n. (Biology) Any of the soft down feathers of a newly-hatched bird.
neossoptiles — n. Plural of neossoptile.
protoptile — n. A feather in the first set of down in a bird that has two such sets.
protoptiles — n. Plural of protoptile.
teleoptile — n. A fully-formed feather (of a mature bird).
teleoptiles — n. Plural of teleoptile.
trichoptilosis — n. Schizotrichia; split ends.

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