DYSPROSIUM
Dys*pro"si*um, n. [NL., fr. Gr. dyspro`sitos hard to get at.] (Chem.)
Defn: An element of the rare earth-group. Symbol Dy; at. wt., 162.5.
DYSTELEOLOGY
Dys*te`le*ol"o*gy, n. Etym: [Pref. dys- + teleology.] (Biol.)
Defn: The doctrine of purposelessness; a term applied by Haeckel to that branch of physiology which treats of rudimentary organs, in view of their being useless to the life of the organism. To the doctrine of dysteleology, or the denial of final causes, a proof of the real existence of such a thing as instinct must necessarily be fatal. Word (Dynamic Sociology).
DYSTOCIA
Dys*to"ci*a, n. Etym: [NL., fr. Gr. (Med.)
Defn: Difficult delivery pr parturition.
DYSTOME
Dys"tome, a. Etym: [Gr. (Min.)
Defn: Cleaving with difficulty.
Note: Datolite was called dystome spar by Mohs.
DYSURIA; DYSURY
Dys*u"ri*a, Dys"u*ry, n. Etym: [L. dysuria, Gr. dysurie.] (Med.)