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aciform

[as-uh-fawrm] /ˈæs əˌfɔrm/
adjective
1.
needle-shaped; acicular.
Origin
1840-1850
1840-50; < Latin aci- (combining form of acus needle; cf. acicula) + -form
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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