• Webster's Revised Unabridged Dictionary
    • v. t. & i Disadvance To draw back, or cause to draw back.
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Century Dictionary and Cyclopedia
    • disadvance To drive back; repel; hinder the advance of.
    • disadvance To draw back.
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Chambers's Twentieth Century Dictionary
    • v.t Disadvance dis-ad-vans′ to cause to retreat:
    • v.t Disadvance dis-ad-vans′ (Spens.) to draw back.
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Webster's Revised Unabridged Dictionary
Pref. dis-, + advance,: cf. OF. desavancier,


In science:

The main disadvant age over other methods is the relatively small wavelength separation of the Balmer lines employed.
A deep survey of heavy element lines in planetary nebulae - I. Observations and forbidden-line densities, temperatures and abundances