SEXTILE
Sex"tile, n. Etym: [Cf. F. aspect sextil.] (Astrol.)
Defn: The aspect or position of two planets when distant from each other sixty degrees, or two signs. This position is marked thus: Hutton.
SEXTILLION Sex*til"lion, n. Etym: [Formed (in imitation of million) fr. L. sextus sixth, sex six: cf. F. sextilion.]
Defn: According to the method of numeration (which is followed also in the United States), the number expressed by a unit with twenty-one ciphers annexed. According to the English method, a million raised to the sixth power, or the number expressed by a unit with thirty-six ciphers annexed. See Numeration.
SEXTO
Sex"to, n.; pl. Sextos. Etym: [L. sextus sixth.]
Defn: A book consisting of sheets each of which is folded into six leaves.
SEXTODECIMO Sex`to*dec"i*mo, a. Etym: [L. sextus-decimus the sixteenth; sextus the sixth (fr. sex six) + decimus the tenth, from decem ten. See - mo.]
Defn: Having sixteen leaves to a sheet; of, or equal to, the size of one fold of a sheet of printing paper when folded so as to make sixteen leaves, or thirty-two pages; as, a sextodecimo volume.
SEXTODECIMO
Sex`to*dec"imo, n.; pl. Sextodecimos (.
Defn: A book composed of sheets each of which is folded into sixteen leaves; hence, indicating, more or less definitely, a size of a book; — usually written 16mo, or 16º.