1 noun MATH, STATgarmheastachán masc1 c m uneasúchán masc1 c m uneastachán masc1 c m uthis is only an approximation of the costníl ann seo ach garmheastachán ar an gcostas2 noun similar thingit's a poor approximation of a Kerry dialectdrochiarracht ar bhlas Chiarraí atá annthis colour is a good approximation to that grey you liketá an dath seo an-ghar don liath sin is maith leat