验定

验定	yàn dìng	to come to a conclusion about sth after examining it / to assay
验	yàn	variant of 验
验	yàn	to examine / to test / to check
定	dìng	to fix; to set; to make definite / to subscribe to (a newspaper etc); to book (tickets etc); to order (goods etc) / to congeal; to coagulate / (literary) definitely