exaptation

名词 n.
中文释义
英 /ˌɛk.səpˈteɪ.ʃən/    美 /ˌɛk.sæpˈteɪ.ʃən/

英文释义

名词 n.
  1. The use of a biological structure or function for a purpose other than that for which it initially evolved. countable,uncountable
    — Birds initially developed wings and feathers as a means of heat regulation. The use of wings for flight is an example of exaptation.
  2. The promotion of meaningless or redundant material so that it does new grammatical (morphosyntactic or phonological) or semantic work. broadly,countable,uncountable
    — The process Haiman focuses on is exaptation, which he defines as "the promotion of meaningless or redundant material so that it does new grammatical (morphosyntactic or phonological) or semantic work" (p52).

词形变化

exaptations plural

词汇关系

衍生词
exaptational
相关词
preadaptation

词源

Etymology tree
Proto-Indo-European *h₁éǵʰ
Proto-Indo-European *-s
Proto-Indo-European *h₁éǵʰs
Proto-Italic *eks
Latin ex
Latin ex-der.
Middle French ex-bor.
Middle English ex-
English ex-
Proto-Indo-European *h₂éd
Proto-Italic *ad
Proto-Italic *ad-
Medieval Latin ad-
Proto-Italic *aptos
Medieval Latin aptus
Proto-Indo-European *-h₂
Proto-Indo-European *-éh₂
Proto-Indo-European *-yéti
Proto-Indo-European *-eh₂yéti
Proto-Italic *-āō
Medieval Latin -ō
Medieval Latin apiō
Proto-Indo-European *-tós
Proto-Italic *-tos
Medieval Latin -tus
▲
Medieval Latin -ō
Medieval Latin -tō
Medieval Latin aptō
Medieval Latin adaptō
Proto-Indo-European *-tis
Proto-Indo-European *-Hō
Proto-Indo-European *-tiHō
Proto-Italic *-tiō
Medieval Latin -tiō
Medieval Latin adaptātiōbor.
French adaptationbor.
English adaptation
blend
English exaptation
Blend of ex- + adaptation. Coined 1982 by palaeontologists Stephen Jay Gould and Elisabeth Vrba to avoid the perceived teleological baggage of the existing term preadaptation.
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