There are 2 definitions of Mc in English:

Mc1

Syllabification: Mc

abbreviation

Megacycle(s), a unit of frequency equal to one million cycles.

Definition of Mc in:

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Word of the day apposite
Pronunciation: ˈapəzɪt
adjective
apt in the circumstances or relation to something

There are 2 definitions of Mc in English:

MC2

Syllabification: MC

abbreviation

1Master of Ceremonies.
1.1(In the US) Member of Congress.
1.2(In an astrological chart) the midheaven.
[from Latin Medium Coeli]
1.3(In the UK) Military Cross.
1.4Music cassette (of prerecorded audiotape).

Definition of Mc in: