Defn: An extinct gigantic quaternary mammal, allied to the ant-eaters and sloths. Its remains are found in South America.

MEGATHEROID
Meg`a*the"roid, n. Etym: [Megatherium + -oid.] (Paleon.)

Defn: One of a family of extinct edentates found in America. The family includes the megatherium, the megalonyx, etc.

MEGAVOLT
Meg`a*volt", n. Etym: [Mega- + volt.] (Elec.)

Defn: One of the larger measures of electro-motive force, amounting to one million volts.

MEGAWEBER
Meg`a*we"ber, n. Etym: [Mega- + weber.] (Elec.)

Defn: A million webers.

MEGERG
Meg"erg`, n. Etym: [Mega- + erg.] (Physics)

Defn: One of the larger measures of work, amounting to one million ergs; — called also megalerg.

MEGILP; MEGILPH
Me*gilp", Me*gilph", n. (Paint.)