op·er·ant 
(ŏpər-ənt)
(ŏpər-ənt)adj.
1. Operating to produce effects; effective.
2. Psychology Of, relating to, or being a response that occurs spontaneously and is identified by its reinforcing or inhibiting effects.
n.
1. One that operates.
2. Psychology An element of operant behavior.
[Latin operāns, operant-, present participle of operārī, to work; see OPERATE.]
oper·ant·ly adv.
- Indo-European root: kā-
- Indo-European root: kō-
- Indo-European root: laks-
- Indo-European root: las-
- Indo-European root: lau-
- Indo-European root: leb-
- Indo-European root: leg-
- Indo-European root: legh-
- Indo-European root: legwh-
- Indo-European root: lei-
- Indo-European root: leid-
- Indo-European root: leig-
- Indo-European root: leigh-
- Indo-European root: leikw-
- Indo-European root: leip-
- Indo-European root: leis-
- Indo-European root: leis-
- Indo-European root: leit-
- Indo-European root: lendh-
- Indo-European root: leu-
- Indo-European root: leubh-
- Indo-European root: leudh-
- Indo-European root: leugh-
- Indo-European root: leuk-
- Indo-European root: leu(ə)-