tardigrade

• adj. 缓步类的；行动缓慢的
• n. 缓步类动物

来自拉丁语 tardus,缓慢的，-grade,走，词源同 grade,gradual.

tardigrade (adj.)

1620s, "slow-going, slow-moving," from French tardigrade (17c.), from Latin tardigradus "slow-paced," from tardus "slow" (see tardy) + gradi "to walk, go, step" (see grade (n.)).