| 单词 | saltationism |
| 释义 | saltationism in British English (sælˈteɪʃəˌnɪzəm) noun biology a theory about the sudden rise of new species as a result of mutations saltationism in American English (sælˈteiʃəˌnɪzəm) noun Biology 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 Derived forms saltationist noun Word origin [1970–75; saltation + -ism]This word is first recorded in the period 1970–75. Other words that entered Englishat around the same time include: New Age, consciousness-raising, postmodernism, relational database, stress test-ism is a suffix appearing in loanwords from Greek, where it was used to form action nounsfrom verbs (baptism). On this model, -ism is used as a productive suffix in the formation of nouns denoting action or practice,state or condition, principles, doctrines, a usage or characteristic, devotion oradherence, etc. (criticism; barbarism; Darwinism; despotism; plagiarism; realism; witticism; intellectualism) |
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