(UK) Alternative spelling of unfulfill

(organic chemistry, medicine) An organoarsenic compound, (2S)-2-amino-5-[[(2R)-1-(carboxymethylamino)-3-dimethylarsanylsulfanyl-1-oxopropan-2-yl]amino]-5-oxopentanoic acid, that has antineoplastic activity

(gymnastics) A padded mat used in gymnastics.

(archaic) At stated times; regularly.