Defn: In a dying manner; as if at the point of death. Beau. & Fl.

DYINGNESS
Dy"ing*ness, n.

Defn: The state of dying or the stimulation of such a state; extreme
languor; languishment. [R.]
Tenderness becomes me best, a sort of dyingness; you see that
picture, Foible, — a swimmingness in the eyes; yes, I'll look so.
Congreve.

DYKE
Dyke, n.

Defn: See Dike. The spelling dyke is restricted by some to the geological meaning.

DYNACTINOMETER
Dy*nac`ti*nom"e*ter, n. Etym: [Gr. actinometer.]

Defn: An instrument for measuring the intensity of the photogenic (light-producing) rays, and computing the power of object glasses.

DYNAM
Dy"nam, n. Etym: [Cf. F. dyname. See Dynamic.]

Defn: A unit of measure for dynamical effect or work; a foot pound.
See Foot pound. Whewell.

DYNAMETER
Dy*nam"e*ter, n. Etym: [Gr. -meter: cf. F. dynamètre. Cf.
Dynamometer.]