Defn: A diminution in the normal amount of fibrin present in the blood.

HYPNAGOGIC
Hyp`na*gog"ic, a. Etym: [Gr.

Defn: Leading to sleep; — applied to the illusions of one who is half asleep.

HYPNOBATE
Hyp"no*bate, n. Etym: [F., fr. Gr.

Defn: A somnambulist. [R.]

HYPNOCYST
Hyp"no*cyst, n. Etym: [Gr. cyst.] (Biol.)

Defn: A cyst in which some unicellular organisms temporarily inclose themselves, from which they emerge unchanged, after a period of drought or deficiency of food. In some instances, a process of spore formation seems to occur within such cysts.

HYPNOGENIC
Hyp`no*gen"ic, a. Etym: [Gr. (Physiol.)

Defn: Relating to the production of hypnotic sleep; as, the so-called hypnogenic pressure points, pressure upon which is said to cause an attack of hypnotic sleep. De Watteville.

HYPNOLOGIST
Hyp*nol"o*gist, n.