M.S.Ent.

1.
Master of Science in Entomology.

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M-series
[em-seer-eez] /ˈɛmˌsɪər iz/ noun, Physics. 1. See under . [em-lahyn] /ˈɛmˌlaɪn/ noun, Physics. 1. one of a series of lines (M-series) in the x-ray spectrum of an atom corresponding to radiation (M-radiation) caused by the transition of an electron to the M-shell.
Mses.
[miz] /mɪz/ plural Mses. [miz-uh z] /ˈmɪz əz/ (Show IPA) 1. a title of respect prefixed to a woman’s name or position: unlike Miss or Mrs., it does not depend upon or indicate her marital status. 2. a title prefixed to a mock surname that is used to represent possession of a particular attribute, identity, […]
Msf
1. Master of Science in Forestry. abbreviation (formerly, in Britain) 1. Manufacturing, Science, Finance (a trade union) Multiple Sclerosis Foundation