From Latintardigradus (“slowly stepping”), from tardus (“slow”) + gradior (“step, walk”), named by Spallanzani in 1776.
Sentence Examples
Tardigrada.
TARDIGRADA, apparently Arthropodous animals whose relationship to the great classes of this sub-kingdom is masked by degenerative modification.
Several genera and species of Tardigrada have been described, perhaps the best known being Macrobiotus schultzii and Milnesium tardigradum.
Incertae sedis - Tardigrada, Pentastomidae (degenerate forms).
The Tardigrada have been regarded as degenerate Acari largely on account of their possessing four pairs of ambulatory limbs, which is considered Milnesium tardigradum, Schrank.