semensis Save DMLBS semensis [cf. CL 2 semenstris], that lasts half a month. b (as sb. m.) fortnight, half a month. s1303 sexaginta viri sagittarii ‥ habentes victum parce satis ~em Flor. Hist. III 113. b a fortnyght, ~is, -is, hic Levins Manip. 119.