To discover or ascertain the existence, presence, or fact of.
To discern (something hidden or subtle): detected a note of sarcasm in the remark.
To learn something hidden and often improper about: detected the manager in a lie.
Electronics To demodulate.
[Middle English detecten, from Latin dētegere, dētēct-, to uncover : dē-, de- + tegere, to cover; see (s)teg- in Indo-European roots.] de·tect'a·ble, de·tect'i·ble adj., de·tect'er n.
1447, from L. detectus, pp. of detegere "uncover, disclose," from de- "un-, off" + tegere "to cover" (see stegosaurus). Detective (n.) is 1850, short for detective police.