-ptile

Representing the Ancient Greek πτῐ́λον (ptílon, “feather”, “down”; “leaf”); in the botanical sense denoting leaves, probably after the French -ptile. Compare ptilo-.

• (Received Pronunciation) IPA^(key): /ptɪl/, /ptaɪl/
• (UK) IPA^(key): /ptɪl/, /ptʌɪl/

-ptile

1. (botany, forming adjectives and nouns) type of leaf

   coleoptile, endoptile, exoptile

2. (ornithology, forming nouns) type of plumage

   neossoptile, teleoptile, trichoptile

• Words formed with this suffix are traditionally stressed on the penult; however, authorities also cite pronunciations, featuring antepenultimate stress, which have developed more recently.

• hypoptilum

• Oxford English Dictionary (third edition, September 2007) s.v. “-ptile, comb. form”

• tiple

Representing the Ancient Greek πτῐ́λον (ptílon, “feather”, “down”; “leaf”).

• IPA^(key): /ptil/

-ptile m

1. (botany) -ptile (leaf)

   coléoptile

2. (ornithology) -ptile (plumage)

   pachyptile