terne UK /tɜːn/US /tɝn/adjective 1noun 2forms 3 adjective1 •Colourless, drab, dull. noun2 •[before a noun] An alloy coating made of lead and tin (or, more recently, zinc and tin), often with some antimony, used to cover iron or steel. •Synonym of terneplate (“thin iron or steel sheeting coated with this alloy”). formsternes · more terne · most terne