Quat
Encyclopedia
Quat may refer to:
- Quaternary ammonium cationQuaternary ammonium cationQuaternary ammonium cations, also known as quats, are positively charged polyatomic ions of the structure NR4+, R being an alkyl group or an aryl group. Unlike the ammonium ion and the primary, secondary, or tertiary ammonium cations, the quaternary ammonium cations are permanently charged,...
, a class of chemical molecules - QuaternionQuaternionIn mathematics, the quaternions are a number system that extends the complex numbers. They were first described by Irish mathematician Sir William Rowan Hamilton in 1843 and applied to mechanics in three-dimensional space...
, a non-commutative extension of the complex numbers - KhatKhatKhat, qat, gat or Waquish Spoken from true Yemeni, is a flowering plant native to tropical East Africa and the Arabian Peninsula....
, an African plant whose leaves are chewed as a stimulant - Phan Huy QuatPhan Huy QuatDr. Phan Huy Quát served as acting Prime Minister of the State of Vietnam and also as Prime Minister of the Republic of Vietnam.-Biography:On July 2, 1949, Dr. Phan Huy Quát was appointed Minister of Education by Head of State Bảo Đại....
, former prime minister of South Vietnam