Lewis & Short Latin Dictionary, 1879. - Revised, Enlarged, and in Great Part Rewritten. Charlton T. Lewis, Ph.D. and Charles Short. 2011.
ENNEADECAETERIS — Gr. Ε᾿ννεαδεκαετηρὶς, novem ac decem annorum circuitus est, quem Meron, Phaini auditor, acceptâ ab eo rectâ Solstitii observatione, non composuit solum, sed et publice Athenis in Comitio monumentum erexit, quo populus doceretur, quibus anni… … Hofmann J. Lexicon universale
Conversion of units — is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors. Contents 1 Techniques 1.1 Process 1.2 Multiplication factors … Wikipedia
Metonic cycle — Heliocentric Solar System In astronomy and calendar studies, the Metonic cycle or Enneadecaeteris (from Greek words for nineteen years) is a period of very close to 19 years which is remarkable for being very nearly a common multiple of the solar … Wikipedia
Eclipse cycle — Animated graph of a the paths of totality of a solar eclipse cycle. Eclipses may occur repeatedly, separated by certain intervals of time: these intervals are called eclipse cycles.[1] The series of eclipses separated by a repeat of one of these… … Wikipedia
