Entry 2 senses Webster, 1913

Presidential

/prĕzˌ-əd-ĕn'-shəl/ · Pres·i·den·tial · IPA /pɹɛzɪˈdɛnʃ(ə)l/

01 a. Presiding or watching over.

1.
Presiding or watching over.
2.
Of or pertaining to a president; as, the presidential chair; a presidential election.