Emily Dickinson Lexicon

AF-FIN'I-TY, n. [L. affinitas, from affinis, adjacent, related by marriage; ad and finis, end.]

1. The relation contracted by marriage, between a husband and his wife's kindred, and between a wife and her husband's kindred; in contradistinction from consanguinity or relation by blood. Solomon made affinity with Pharaoh. – 1 Kings iii.
2. Agreement; relation; conformity; resemblance; connection; as, the affinity of sounds, of colors, or of languages.
3. In chimistry, that attraction which takes place at an insensible distance, between the heterogeneous particles of bodies, and forms compounds.