The essential part or cause of something, as in We still don’t understand what happened; we must get to the root of the matter. This expression was first recorded in the Bible (Job 19:28).
- Root of tongue
root of tongue n. The rear attached portion of the tongue.
- Root of tooth
root of tooth n. The part of a tooth below the neck of the tooth, covered by cementum rather than enamel and attached by the periodontal ligament to the alveolar bone.
noun, Mathematics. 1. a complex number that when raised to some positive integral power results in 1.
noun, Music. 1. the position of a triad in which the root is in the bass. root position noun 1. (music) the vertical distribution of the written notes of a chord in which the root of the chord is in the bass See position (sense 12a), inversion (sense 5a)