(astronomy) Initialism of Mars-crossing asteroid. / (aviation) Initialism of minimum crossing altitude. / A master in computer science and application.

(computing) Microchannel Architecture, a computer bus standard (expansion bus) for connecting of internal components.

(politics) Initialism of Malaysian Chinese Association. (political party for Malaysian Chinese)

plural of MCA

(chemistry) Initialism of monochloroacetic acid.

A surname from Scottish Gaelic.

A Scottish surname from Scottish Gaelic.

(mineralogy) A trigonal-hexagonal scalenohedral mineral containing boron, hydrogen, magnesium, and oxygen.

(mineralogy) An isometric mineral containing copper, hydrogen, oxygen, and tellurium.

A surname from Scottish Gaelic.