S.i.d. definitions

s.i.d.

Abbreviation for Latin sem´el in di´e (once a day); written also semel in d. Used in prescription writing.
Found on http://www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszS

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s.i.d.

semel in die; s.i.d. Once a day. Used with medical prescriptions.
Found on http://www.wordinfo.info/words/index/info/view_unit/3481/3

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