1 عمومی:: غیر قابل مشاهده، دیده نشدنی، غیر محسوس، جزئی
شبکه مترجمین ایران
1 general:: adj. VERBS be ADV. almost, virtually His head moved in an almost imperceptible nod. PREP. to The slight change in the taste was imperceptible to most people.
Oxford Collocations Dictionary