Palæont. Pl. entrochi. [mod.L., f. Gr. ἐν in + τροχός wheel.] A name sometimes given to the wheel-like plates of which certain crinoids are composed.
1676. Beaumont, in Phil. Trans., XI. 727. Most of the oval Entrochi grow crooked and twisting.
1755. T. Amory, Mem., 177–8. The vault and walls are decorated with entrochi and shells.
1794. R. J. Sulivan, View Nat., I. 488. The entrochi, the glossopetra, and the relicks of other fishes.
