neotenyn.
英 niː'ɒt(ə)nɪ | 美 'niə,tini
中文n. 性早熟；幼态持续
词根词源
neoteny (n.)retention of juvenile characteristics in adult life, 1901, from German neotenie (1884), from Greek neos "young" (see new) + teinein "to extend" (see tenet).
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