Defn: The quality of being implacable; implacability.

IMPLACABLY
Im*pla"ca*bly, adv.

Defn: In an implacable manner.

IMPLACENTAL
Im`pla*cen"tal, a. (Zoöl.)

Defn: Without a placenta, as marsupials and monotremes.
— n.

Defn: A mammal having no placenta.

IMPLACENTALIA
Im`pla*cen*ta"li*a, n. pl. Etym: [NL. See In- not, and Placental.]
(Zoöl.)

Defn: A primary division of the Mammalia, including the monotremes and marsupials, in which no placenta is formed.

IMPLANT
Im*plant" v. t. [imp. & p. p. Implanted; p. pr. & vb. n. Implanting.]
Etym: [Pref. im- in + plant: cf. F. implanter.]

Defn: To plant, or infix, for the purpose of growth; to fix deeply; to instill; to inculate; to introduce; as, to implant the seeds of virtue, or the principles of knowledge, in the minds of youth. Minds well implanted with solid . . . breeding. Milton.