| 单词 | saltationism |
| 释义 | saltationism —saltationist, n. /sal tay"sheuh niz'euhm/, n. Biol. any of several theories holding that the evolution of species proceeds in major steps by the abrupt transformation of an ancestral species into a descendant species of a different type, rather than by the gradual accumulation of small changes. [1970-75; SALTATION + -ISM] |
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