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Definitions of rb
  1. noun
    a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite
Definition that contains rb
  • we The plural nominative case of the pronoun of the first person; the word with which a person in speaking or writing denotes a number or company of which he is one, as the subject of an action expressed by a verb.
  • we The plural nominative case of the pronoun of the first person; the word with which a person in speaking or writing denotes a number or company of which he is one, as the subject of an action expressed by a verb.
  • we The plural nominative case of the pronoun of the first person; the word with which a person in speaking or writing denotes a number or company of which he is one, as the subject of an action expressed by a verb.
  • no a radioactive transuranic element synthesized by bombarding curium with carbon ions; 7 isotopes are known
  • be to remain unmolested, undisturbed, or uninterrupted -- used only in infinitive form
  • all completely given to or absorbed by
  • as a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar
  • say communicate or express nonverbally
  • more used to form the comparative of some adjectives and adverbs
  • much (degree adverb used before a noun phrase) for all practical purposes but not completely
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