pygidium
(phonology) A phonemic merger where the vowels in pin and pen are pronounced the same before /n/ and /m/, making pin and pen homonyms.
pin
pen
(zoology) The caudal plate of trilobites, crustacea, and certain insects.
plural of spoiler effect
One of 102 counties in Illinois, United States. County seat: Aledo. Named after Hugh Mercer. / One of 120 counties in Kentucky, United States. County seat: Harrodsburg. Named after Hugh Mercer.
化石の尾盾には細かな成長線が見られ、それが三葉虫の種を特定するのに役立った。
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