Henry George Liddell, Robert Scott, A Greek-English Lexicon

A.“Σεράπι” Milet.1(7).283, 205b:—Sarapis or Serapis, an Egyptian god, Osiris-Apis (introduced from Sinope under Ptol. I acc. to Tac.H.4.83-84), Men.in POxy.1803.8, Call.Epigr.38.3, D.S.1.25, Plu.2.362a; freq. in Inscrr., OGI16 (Halic., iii B.C.), al., SIG664.25 (Delos, ii B.C.), al., CIG4042 (Ancyra), al., and Papyri, UPZ32.38 (ii B.C.), etc.:—hence Σα^ρα_πιεῖον , τό, temple of Sarapis, SIG663.14 (Delos, iii/ii B.C.), PCair.Zen.34.13 (iii B.C.), UPZ122.6 (ii B.C.), Plb.4.39.6; contr. Σα^ρα_πεῖον or Σερα_πεῖον , τό, CIG4401, Plu.Alex.76, D.C.66.24; Σαράπιον or Σερ- , Str.17.1.10, CIG2715b.4 (Caria):—Σα^ρα_πιεῖα , τά, festival at Tanagra, IG7.540:—Σα^ρα_πιασταί , οἱ, guild of worshippers of Sarapis, ib.22.1292, SIG1114 (Rhodes, ii B.C.).

II. a plant, PMag.Osl.1.363. [Inscrr. and Papyri show Σαρ- almost without exception in iii and iiB.C.; Σερ- becomes common in the Roman period.]