tar·di·grade /ˈtɑrdəˌgred/
(a.)緩步類的,緩慢的緩步類動物
Tar·di·grade a.
1. Moving or stepping slowly; slow-paced. [R.]
2. Zool. Of or pertaining to the Tardigrada.
Tar·di·grade, n. Zool. One of the Tardigrada.
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tardigrade
n : an arthropod of the division Tardigrada