英和和英

発音

• (General American) IPA: /ˌplizioʊˈmɔɹfɪk/
• ハイフネーション: ple‧sio‧mor‧phic

形容詞

plesiomorphic (comparative more plesiomorphic, superlative most plesiomorphic)

1. (cladistics) Sharing a character state with an ancestral clade; primitive.
   • 2000, Christine A. Nalepa, Claudio Bandi, “Paedomorphosis and Termite Evolution”, in Termites: Evolution, Sociality, Symbioses, Ecology, →ISBN, page 68:

     [T]he cockroach Polyphaga may represent a condition more plesiomorphic than in other Dictyoptera, but it could as well be paedomorphic, and therefore more derived than in other Dictyoptera [72].

   • 2025 September 27, Julia Jacobo, “Million-year-old skull could rewrite timeline of human origin, researchers say”, in ABC News‎, archived from the original on 14 February 2026:

     "The cranium is clearly plesiomorphic in overall form, presenting primitive traits shared by earlier hominins," the authors wrote.

2. Plesiomorphous.

同意語

• primitive, basal

派生語

• plesiomorphically

関連する語

• plesiomorphy
• apomorphic
• paedomorphic