OPCt
OPCt is an acronym that may refer to more than one concept, and there is no single, universally accepted definition. Its meaning is highly context-dependent, and in many sources it may appear as a proper noun (such as a project name or organization) or as an abbreviated term within specialized literature. Because of this ambiguity, OP Ct is sometimes presented with varying capitalization and without a standard expansion.
In practice, OPct has surfaced in niche technical writing to denote different phrases depending on the field.
Guidance for interpretation is to examine the surrounding text for an explicit definition, identify the discipline
References: There is no universally acknowledged meaning for OP Ct in major reference works; the term remains