polyglot (adj.)youdaoicibaDictYouDict[polyglot 词源字典]
1650s, from Greek polyglottos "speaking many languages," literally "many-tongued," from polys "many" (see poly-) + glotta, Attic variant of glossa "language," literally "tongue" (see gloss (n.2)). As a noun from 1640s.[polyglot etymology, polyglot origin, 英语词源]
polygon (n.)youdaoicibaDictYouDict
1570s, from Latin polygonum, from Greek polygonon, noun use of neuter of adjective polygonos "many-angled," from polys "many" (see poly-) + -gonos "angled," from gonia "angle" (see -gon). Related: Polygonal.
polygraph (n.)youdaoicibaDictYouDict
1794, "mechanical device for making multiple copies of something written or drawn," from Greek polygraphos "writing much," from polys "much" (see poly-) + graphos "writing," from graphein "to write" (see -graphy).

Meaning "instrument for recording several pulsations of the body at the same time" is 1871; first used as a lie detector 1921. Related: Polygraphy (1590s); polygraphic (1771).
polygyny (n.)youdaoicibaDictYouDict
1780, "condition of having many wives," from poly- "many" (see poly-) + Greek gyne "woman, wife" (see queen). Related: Polygynous.
polyhedral (adj.)youdaoicibaDictYouDict
1741, from polyhedron + -al (1).
polyhedron (n.)youdaoicibaDictYouDict
1560s, from Latinized form of Greek polyedron, neuter of adjective polyedros "having many bases or sides," from polys "many" (see poly-) + hedra "seat, base, chair, face of a geometric solid," from PIE root *sed- (1) "to sit" (see sedentary).
polyhistor (n.)youdaoicibaDictYouDict
"very learned person," 1580s, from Greek polyhistor "very learned," from poly "much, many" (see poly-) + histor "knowing, learned" (see history).
polymath (n.)youdaoicibaDictYouDict
1620s, from Greek polymathes "having learned much, knowing much," from polys "much" (see poly-) + root of manthanein "to learn" (see mathematic).
polymer (n.)youdaoicibaDictYouDict
a substance built from a large number of simple molecules of the same kind, 1855, probably from German Polymere (Berzelius, 1830), from Greek polymeres "having many parts," from polys "many" (see poly-) + meros "part" (see merit (n.)).
polymerase (n.)youdaoicibaDictYouDict
1866, coined by Berzelius (1830) from Greek polymeres "having many parts" (see polymer).
polymeric (adj.)youdaoicibaDictYouDict
1829, from polymer + -ic.
polymerization (n.)youdaoicibaDictYouDict
1866, from polymer + -ization.
polymerize (v.)youdaoicibaDictYouDict
1851, from polymer + -ize. Related: Polymerized; polymerizing.
polymorph (n.)youdaoicibaDictYouDict
"organism of several forms," 1828, from Greek polymorphos "of many forms" (see polymorphous).
polymorphism (n.)youdaoicibaDictYouDict
1839, from polymorph + -ism.
polymorphous (adj.)youdaoicibaDictYouDict
1785, from Greek polymorphos "multiform, of many forms, manifold," from poly- "many" (see poly-) + morphe "shape, form" (see Morpheus). Related: Polymorphic; polymorphously; polymorphousness.
Polynesia (n.)youdaoicibaDictYouDict
1758, Latinization of French polynésie, coined 1756 by French writer Charles de Brosses (1709-1777) in "Histoire des navigations aux terres australes, contenant ce que l'on sait des moeurs et des productions des contrées découvertes jusqu'à ce jour" (and first in English in a review of it), coined from Greek polys "many" (see poly-) + nesos "island" (see Chersonese). Related: Polynesian.
polynomialyoudaoicibaDictYouDict
1670s (n.), 1704 (adj.), irregularly formed from poly- + stem of binomial.
polyp (n.)youdaoicibaDictYouDict
c. 1400, "nasal tumor," from Middle French polype and directly from Latin polypus "cuttlefish," also "nasal tumor," from Greek (Doric, Aeolic) polypos "octopus, cuttlefish," from polys "many" (see poly-) + pous "foot," from PIE root *ped- (1) "a foot" (see foot (n.)). Etymological sense revived 1742 as a name for hydras and sea anemones (earlier polypus, early 16c.). The Latin word is the source of French poulpe "octopus."
polypeptide (n.)youdaoicibaDictYouDict
peptide built from a large number of amino acids, 1903, from German polypeptid; see poly- + peptide.