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dilative

[dahy-ley-tiv, di-, dahy-ley-]
adjective
  1. serving or tending to dilate.
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Origin of dilative

First recorded in 1520–30; dilate + -ive
Related formsun·di·la·tive, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018