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▪ I. subˈdominant, n.1 Mus.
[sub- 4. Cf. F. sousdominante.]
The note next below the dominant of a scale; the fourth note in ascending and the fifth in descending a scale. Also attrib.
1793Encycl. Brit. (1797) XII. 502/1 The chord of the sub-dominant. Ibid. 548/2 These three sounds, the tonic, the tonic dominant, and the sub-dominant, contain in their chords all the notes which enter into the scale of the mode. 1835Court Mag. VI. 26/1 She might if she pleased break through that eternal descent by two semitones from the dominant to the sub-dominant. 1863Atkinson Ganot's Physics §207 (1866) 162 The tonic, dominant, and sub-dominant chords. Ibid. 163 The dominant and sub-dominant bear major triads.
▪ II. subˈdominant, a. (n.2)
[sub- 14.]
1. Less than dominant, not quite dominant. (See quots.)
1826Kirby & Sp. Entomol. xlix. IV. 493 We may take Scolia for an example of a subdominant group beginning more southward. a1909Buck's Med. Handbk. III. 260 (Cent. Dict. Supp.) Those disturbances which are dominant become focal in consciousness, or the mind is fully conscious of such. Those that are sub-dominant bring about marginal or sub-conscious psychical states.
2. Ecol. Designating a species which is prevalent in a community, but below the dominant in precedence. Also as n. Cf. dominant a. 8.
1909Groom & Balfour tr. Warming's Oecol. Plants xxxv. 139 Every community consists of dominant and sub-dominant species, as well as of others that are more or less dependent upon these and occur only here and there. 1923Ecology IV. 13 Species belonging to life-forms of subordinate rank (i.e. subdominant species) have also to be considered. 1933[see co-dominant n.]. 1969Gloss. for Landscape Work (B.S.I.) v. 39 Sub-dominant..Of a species, that species in a mixed crop which is selected to come next in precedence to the dominant. |