one and a half sesterces of premium

    sēmis issis, m    [semi+as], a half-unit, one half: HS singulos semīs accessionis dare, i. e. one and a half sesterces of premium (on each medimnus): bina iugera et semisses agri adsignati, L.— Half an as: non semissis homo, not worth a groat: (ad quincuncem) redit uncia, quid fit? Semis, H. — Plur abl., as monthly interest, at one half per cent. a month, at half a denarius for each hundred (i. e. six per cent. per annum): semissibus magna copia (pecuniae) est.