An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

1a) The sense of curiosity about or concern with something or someone.
1b) Something in which one is interested.
1c) A right, share, or claim in a business or property.
2) To engage or excite the attention or curiosity of.

M.E., from M.L. from L. interest "it concerns," from M.L. interesse "compensation for loss," noun use of L. interesse "to concern, make a difference, be of importance," literally "to be between," from → inter- "between" + esse "to be," → entity.

Andarast, coined (Adib-Soltani) on the model of the L. word, as above, from andar "between," → inter-, + ast variant hast "is, exists," → entity.

Having an interest in something; having the attention engaged; being affected or involved.

P.p. of → interest.

Inspiring interest, holding the attention.

Adj. from → interest.