tighter / titer [ˈtaitɜr]
tighter – adj. & n. – adj. – comparative form of tight – more dense, more tense, closer, harder; n. – a caulker, one who ensures that a vessel is well sealed
titer (titre) – n. – 1. Chemistry the strength of a solution as determined by volumetric analysis and usually expressed as the reciprocal of the highest dilution of the solution or substance showing specific activity; 2. the solidifying point of the fatty acids liberated from a fat that is determined by melting the acids in a tube and noting the temperature at which they solidify again