[puh-rab-uh-loid] /pəˈræb əˌlɔɪd/
a surface that can be put into a position such that its sections parallel to at least one coordinate plane are .
a geometric surface whose sections parallel to two coordinate planes are parabolic and whose sections parallel to the third plane are either elliptical or hyperbolic. Equations x²/a² ± y²/b² = 2cz
A surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis.
[par-uh-breyk] /ˈpær əˌbreɪk/ noun 1. . /ˈpærəˌbreɪk/ noun 1. another name for brake parachute
parabulia par·a·bu·li·a (pār’ə-bōō’lē-ə, -byōō’-) n. Abnormality of volition or will, as when one impulse is checked and replaced by another.
/ˌpærəˈkeɪsɪɪn; -siːn/ noun 1. (US) another name for casein paracasein par·a·ca·sein (pār’ə-kā’sēn’, -sē-ĭn) n. A compound produced by the action of rennin upon casein.
- Paracel islands
/ˌpærəˈsɛl/ noun 1. a group of uninhabited islets and reefs in the N South China Sea, the subject of territorial claims by China and Vietnam Compare Spratly Islands