Blend of pito (“seven”) + siha (“angle”).
pitsihà (Baybayin spelling ᜉᜒᜆ᜔ᜐᜒᜑ) (geometry, neologism)
- heptagon
- del Rosario, Gonsalo (1969) Maugnaying Talasalitaang Pang-agham : Ingles-Pilipino [Correlative Word List for Sciences : English-Filipino] (overall work in English and Tagalog), Manila: National Book Store, Inc., →LCCN, →OL