Defn: That aches; continuously painful. See Ache.
— Ach"ing*ly, adv.
The aching heart, the aching head. Longfellow.

ACHIOTE
A`chi*o"te, n. Etym: [Sp. achiote, fr. Indian achiotl.]

Defn: Seeds of the annotto tree; also, the coloring matter, annotto.

ACHLAMYDATE
A*chlam"y*date, a. Etym: [Gr. (Zoöl.)

Defn: Not possessing a mantle; — said of certain gastropods.

ACHLAMYDEOUS
Ach`la*myd"e*ous, a. (Bot.)

Defn: Naked; having no floral envelope, neither calyx nor corolla.

ACHOLIA
A*cho"li*a, n. Etym: [NL., from Gr. (Med.)

Defn: Deficiency or want of bile.

ACHOLOUS
Ach"o*lous, a. (Med.)