AFFINITY

noun (plural -ties) Etymology: Middle English affinite, from Anglo-French or Latin; Anglo-French affinité, from Latin affinitas, from affinis bordering on, related by marriage, from ad- + finis end, border Date: 14th century relationship by marriage, 2. sympathy marked by community of interest ; kinship , b. an attraction to or liking for something , an attractive force between substances or particles that causes them to enter into and remain in chemical combination, a person especially of the opposite sex having a particular attraction for one, 3. likeness based on relationship or causal connection , a relation between biological groups involving resemblance in structural plan and indicating a common origin, see: attraction