Latin phrase, "to this, with respect to this, for this (specific purpose)," from ad "to" (see ad-) + hoc, neuter accusative of hic "this." Hence, "appointed or enacted for some particular purpose" (1879).
an ad hoc committee meeting
a coordinated policy instead of ad hoc decisions
they were appointed ad hoc
-acy
ad
ad-
*ad-
-ad
ad hoc
ad hominem
ad infinitum
ad lib
ad nauseam
ad valorem
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