dispersive adjective. [dɪ'spǝ:sɪv] E17.
[from DISPERSE verb + -IVE. Cf. Old & mod. French dispersif, -ive.]
Having the character or quality of dispersing, serving or tending to disperse something; Physics causing dispersion (of light etc.).

■ dispersiveness noun M19.

■ disper'sivity noun the degree to which the refractive index of a substance varies with wavelength E20.

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