alerce Syllabification: (a·ler·ce)Pronunciation: /əˈlərsə/Definition of alerce noun a cypress tree that is valued for its timber. Several species in the family Cupressaceae, in particular the sandarac tree (Tetraclinis articulata) of southern Spain and northwestern Africa, from which the resin sandarac is obtained Origin: mid 19th century: from Spanish, 'larch'alerce in other Oxford dictionaries Definition of alerce in the British & World English dictionary