عمر doesn't appear in Hans Wehr's Modern Standard Arabic dictionary, but Lane's Arabic-English Lexicon has 5 entries for it, distinguished by diacritics. Select one below for the full classical Arabic definition.

• عَمِرَ Form 1

  1 عَمِرَ ذ , aor. عَمَرَ ; (S, O, Msb, K;) and عَمَرَ, aor. عَمُرَ (K) and عَمِرَ ; (Sb, K;) inf. n. عَمْرٌ (S, O, Msb, K) and عُمْرٌ, (S, O, Msb,) both anomalous, as inf. ns. of عَمِرَ, for by rule the inf. n. should be…

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• عَمْرٌ

  عَمْرٌ ذ and are both inf. ns., signifying the same. (S, O.) [See 1. As such, the former is the more common.] And both of these words, (Mgh, K, &c.,) and , (K, &c.,) [used as simple substs., or abstract ns., in which cas…

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• عُمْرٌ

  عُمْرٌ ذ : see عَمْرٌ, in two places.…

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• عَمَرٌ

  عَمَرٌ ذ : see عَمْرٌ, in four places.…

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• عُمُرٌ

  عُمُرٌ ذ : see عَمْرٌ, in two places.…

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