Macropodian
(Mac`ro*po"di*an) n. A macropod.
Macropodous
(Ma*crop"o*dous) a. (Zoöl.) Having long legs or feet.
Macroprism
(Mac"ro*prism) n. [Macro- + prism.] (Crystallog.) A prism of an orthorhombic crystal
between the macropinacoid and the unit prism; the corresponding pyramids are called macropyramids.
Macropteres
(||Ma*crop"te*res) n. pl. [NL., fr. Gr. long + feather, wing.] (Zoöl.) A division of birds; the
Longipennes.
Macropterous
(Ma*crop"ter*ous) a. [See Macropteres.] (Zoöl.) Having long wings.
Macropus
(||Mac"ro*pus) n. [NL. See Macropod.] (Zoöl.) A genus of marsupials including the common
kangaroo.
Macropyramid
(Mac`ro*pyr"a*mid) n. [Macro- + pyramid.] (Crystallog.) See Macroprism.
Macroscopic
(Mac`ro*scop"ic Mac`ro*scop"ic*al) a. [Macro- + Gr. to view.] Visible to the unassisted
eye; — as opposed to microscopic. — Mac`ro*scop"ic*al*ly, adv.
Macrosporangium
(||Mac`ro*spo*ran"gi*um) n. [NL. See Macro-, and Sporangium.] (Bot.) A sporangium
or conceptacle containing only large spores; — opposed to microsporangium. Both are found in the
genera Selaginella, Isoctes, and Marsilia, plants remotely allied to ferns.
Macrospore
(Mac"ro*spore) n. [Macro- + spore.] (Bot.) One of the specially large spores of certain
flowerless plants, as Selaginella, etc.
Macrosporic
(Mac`ro*spor"ic) a. (Bot.) Of or pertaining to macrospores.
Macrotone
(Mac"ro*tone) n. [Gr. stretched out. See Macro-, and Tone.] (Pron.) Same as Macron.
Macrotous
(Ma*cro"tous) a. [Macro- + Gr. o"y^s, gen. 'wto`s, the ear.] (Zoöl.) Large-eared.
Macroura
(||Ma*crou"ra) n. pl., Macroural
(Ma*crou"ral) a., etc. (Zoöl.) Same as Macrura, Macrural,
etc.
Macrozoöspore
(Mac`ro*zo"ö*spore) n. [Macro- + zoöspore.] (Bot.) A large motile spore having four
vibratile cilia; — found in certain green algæ.
Macrura
(||Ma*cru"ra) n. pl. [NL., fr. Gr. long + tail.] (Zoöl.) A subdivision of decapod Crustacea, having
the abdomen largely developed. It includes the lobster, prawn, shrimp, and many similar forms. Cf. Decapoda.
Macrural
(Ma*cru"ral) a. (Zoöl.) Same as Macrurous.
Macruran
(Ma*cru"ran) n. (Zoöl.) One of the Macrura.
Macruroid
(Ma*cru"roid) a. [Macrura + -oid.] (Zoöl.) Like or pertaining to the Macrura.
Macrurous
(Ma*cru"rous) a. (Zoöl.) Of or pertaining to the Macrura; having a long tail.
Mactation
(Mac*ta"tion) n. [L. mactatio, fr. macture to slay, sacrifice.] The act of killing a victim for
sacrifice. [Obs.]
Mactra
(||Mac"tra) n. [NL., fr. Gr. kneading trough, fr. to knead.] (Zoöl.) Any marine bivalve shell of
the genus Mactra, and allied genera. Many species are known. Some of them are used as food, as
Mactra stultorum, of Europe. See Surf clam, under Surf.
