4. (Zoöl.) Spiral with the whorls decreasing rapidly from a large base
to a pointed apex; — said of certain shells.
Tur`bi*na"tion (?), n. [Cf. L. tirbinatio a pointing in the form of a
cone. See Turbinate.] The act of spinning or whirling, as a top.
<! p. 1552 !>
Tur"bine (?), n. [L. turbo, - inis, that which spins or whirls round,
whirl.] A water wheel, commonly horizontal, variously constructed, but
usually having a series of curved floats or buckets, against which the
water acts by its impulse or reaction in flowing either outward from a
central chamber, inward from an external casing, or from above
downward, etc.; — also called turbine wheel.
In some turbines, the water is supplied to the wheel from below,
instead of above. Turbines in which the water flows in a direction
parallel to the axis are called parallel-flow turbines.
||Tur`bi*nel"la (?), n. [NL., dim. fr. L. turbo, -inis, a top.] (Zoöl.)
||A genus of large marine gastropods having a thick heavy shell with
||conspicuous folds on the columella.
||
Tur"bi*nite (?), n. [NL. Turbo, the generic name, fr. L. turbo a whirl,
top: cf. F. turbinite.] (Paleon.) A petrified shell resembling the
genus Turbo. [R.]
Tur"bi*noid (?), a. [See Turbo, and -oid.] (Zoöl.) Like or pertaining
to Turbo or the family Turbinidæ.