SESQUIALTERAL; SESQUIALTERATE Ses`qui*al"ter*al, Ses`qui*al"ter*ate, a. Etym: [L. sesquialter once and a half; sesqui- + alter other: cf. F. sesquialtére.]
Defn: Once and a half times as great as another; having the ratio of one and a half to one. Sesquialteral ratio (Math.), the ratio of one and a half to one; thus, 9 and 6 are in a sequialteral ratio.
SESQUIALTEROUS
Ses`qui*al"ter*ous, a.
Defn: Sesquialteral.
SESQUIBASIC
Ses`qui*ba"sic, a. Etym: [Sesqui- + basic.] (Chem.)
Defn: Containing, or acting as, a base in the proportions of a sesqui compound.
SESQUIDUPLICATE
Ses`qui*du"pli*cate, a. Etym: [Sesqui- + duplicate.]
Defn: Twice and a half as great (as another thing); having the ratio of two and a half to one. Sesquiduplicate ratio (Math.), the ratio of two and a half to one, or one in which the greater term contains the lesser twice and a half, as that of 50 to 20.
SESQUIOXIDE
Ses`qui*ox"ide, n. Etym: [Sesqui- + oxide.] (Chem.)
Defn: An oxide containing three atoms of oxygen with two atoms (or radicals) of some other substance; thus, alumina, Al2O3 is a sesquioxide.