in Irish music, “harp tune of a sportive and animated character” [OED], 1790, of unknown origin, evidently not a native Irish word; some suggest ultimate derivation from Latin plangere “to strike, beat” (see plague (n.)). See also [Katrin Thier, “Of Picts and Penguins — Celtic Languages in the New Edition of the OED,” in “The Celtic Languages in Contact,” 2007.
noun 1. (def 4).
planum pla·num (plā’nəm) n. pl. pla·na (-nə) A plane or flat surface.
[plas-tiks] /ˈplæs tɪks/ adjective 1. of or relating to a or : a plastics firm; plastics research. [plas-tik] /ˈplæs tɪk/ noun 1. Often, plastics. any of a group of synthetic or natural organic materials that may be shaped when soft and then hardened, including many types of resins, resinoids, polymers, cellulose derivatives, casein materials, and […]
- Plastic strain
plastic strain Strain in which the distorted body does not return to its original size and shape after the deforming force has been removed. See more at strain.