Definition of acu-

 (Entry 1 of 2)

: with a needle acupuncture
\ ˌā-ˌsē-ˈyü\

Definition of ACU (Entry 2 of 2)

American Conservative Union

History and Etymology for acu-

Combining form

Medieval Latin, from Latin acu, ablative of acus needle; akin to Latin acies edge

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