ma

Etymology 1

noun

1. (astronomy, usually in the plural) Abbreviation of milli-arcsecond.

Etymology 2

The sound, which parents interpret as a reference to themselves, is very commonly made by infants.

noun

1. (colloquial, and in direct address) mother, mama
2. (colloquial) The landlady of a theater.
   […] that dear little man writing in the guestbook of the "Ma" or theatrical landlady […] 1949, Shaw Desmond, The Edwardian Story, page 322

Etymology 3

Abbreviation.

noun

1. May

Etymology 4

From my.

det

1. (dialectal, informal) Alternative spelling of my