American Heritage Dictionary
(2)
Century Dictionary
(9)
GNU Webster's 1913
WordNet
Elsewhere on the web
Kircher's massive treatise from 1646, 'Ars Magnus et Umbrae', contains observations on the nature of light, lenses, mirrors, sundials, astrology and (Ptolemaic) astronomy and related topics.— BibliOdyssey
Ptolemy I Soter, the first of the Ptolemaic kings.— CreationWiki - Recent changes [en]
On the seabed of Alexandria's Eastern Harbour lie the royal quarters of the Ptolemaic dynasty complete with temples, palaces and streets.— Al-Ahram Weekly Online

Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word a few times a year.
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