2. A micrometer. [R.] Knight.

{ Meg"a*me`ter, Meg"a*me`tre } (?), n. [Mega- + meter, metre, n., 2.]

In the metric system, one million meters, or one thousand kilometers.

Meg`am`père" (?), n. [Mega- + ampère.] (Elec.) A million ampères.

Meg"a*phone (?), n. [Mega- + Gr. fwnh` voice.] A device to magnify

sound, or direct it in a given direction in a greater volume, such as a

very large funnel used as an ear trumpet or as a speaking trumpet.

||Me*gaph"y*ton (?), n. [NL., from Gr. me`gas great + fyto`n plant.]

||(Paleon.) An extinct genus of tree ferns with large, two-ranked

||leaves, or fronds.

Meg"a*pode (?), n. [Mega- + Gr. poy`s, podo`s, foot.] (Zoöl.) Any one

of several species of large-footed, gallinaceous birds of the genera

Megapodius and Leipoa, inhabiting Australia and other Pacific islands.

See Jungle fowl (b) under Jungle, and Leipoa.

Me*gap"o*lis (?), n. [NL., fr. Gr. me`gas great + po`lis city.] A

metropolis. [Obs.] Sir T. Herbert.

{ Me*ga"ri*an (?), Me*gar"ic (?), } a. Belonging, or pertaining, to

Megara, a city of ancient Greece.

Megarian, or Megaric, school, a school of philosophy established at

Megara, after the death of Socrates, by his disciples, and remarkable

for its logical subtlety.

Meg"a*scope (?), n. [Mega- + -scope: cf. F. mégascope.] A modification

of the magic lantern, used esp. for throwing a magnified image of an

opaque object on a screen, solar or artificial light being used.

[archaic]

Meg"a*seme (?), a. [Mega- + Gr. &?; sing, mark: cf. F. mégasème.]

(Anat.) Having the orbital index relatively large; having the orbits

narrow transversely; -- opposed to microseme.

{ Me"gass" (?), Me*gasse" }, n. See Bagasse.

Meg"as*thene (?), n. [Gr. me`gas great + sthe`nos strength.] (Zoöl.)

One of a group which includes the higher orders of mammals, having a

large size as a typical characteristic.

Meg`as*then"ic (?), a. (Zoöl.) Having a typically large size; belonging

to the megasthenes.

Meg"a*stome (?), n. [Gr. me`gas great + sto`ma mouth.] (Zoöl.) One of a

group of univalve shells, having a large aperture or mouth.

{ Meg"a*there (?), ||Meg`a*the"ri*um (?), } n. [NL. megatherium, fr.

Gr. me`gas great + thyri`on beast.] (Paleon.) An extinct gigantic

quaternary mammal, allied to the ant-eaters and sloths. Its remains are

found in South America.

Meg`a*the"roid (?), n. [Megatherium + -oid.] (Paleon.) One of a family

of extinct edentates found in America. The family includes the

megatherium, the megalonyx, etc.

Meg`a*volt" (?), n. [Mega- + volt.] (Elec.) One of the larger measures

of electro-motive force, amounting to one million volts.

Meg`a*we"ber (?), n. [Mega- + weber.] (Elec.) A million webers.

Meg"erg` (?), n. [Mega- + erg.] (Physics) One of the larger measures of

work, amounting to one million ergs; -- called also megalerg.

{ Me*gilp" (?), Me*gilph" (?) }, n. (Paint.) A gelatinous compound of

linseed oil and mastic varnish, used by artists as a vehicle for

colors. [Written also magilp, and magilph.]

Meg"ohm" (?), n. [Mega- + ohm.] (Elec.) One of the larger measures of

electrical resistance, amounting to one million ohms.

Me"grim (?), n. [OE. migrim, migrene, F. migraine, LL. hemigrania, L.

hemicrania, hemicranium, Gr. "hmikrani`a; "hmi- half + krani`on skull.

See Hemi- and Cranium, and cf. Hemicrania, Migraine.] 1. A kind of sick

or nervous headache, usually periodical and confined to one side of the

head.

2. A fancy; a whim; a freak; a humor; esp., in the plural, lowness of

spirits.

These are his megrims, firks, and melancholies.

Ford.

3. pl. (Far.) A sudden vertigo in a horse, succeeded sometimes by

unconsciousness, produced by an excess of blood in the brain; a mild

form of apoplexy. Youatt.

Me"grim, n. [Etymol. uncertain.] (Zoöl.) The British smooth sole, or

scaldfish (Psetta arnoglossa).

Mei*bo"mi*an (?), a. (Anat.) Of, pertaining to, or discovered by,

Meibomius.

Meibomian glands, the slender sebaceous glands of the eyelids, which

discharge, through minute orifices in the edges of the lids, a fatty

secretion serving to lubricate the adjacent parts.

Meine (?), v. t. See Menge.

{ Mein"e, Mein"y, (&?;), } n. [OF. maisniée, maisnie. See Menial.] 1. A

family, including servants, etc.; household; retinue; train. [Obs.]

Chaucer. Shak.

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