245 reported on the synthesis of linear but alsobranched polymers prepared by di-, tri-, and tetra-alkyne andazide monomers like the combination of tripropargylamine(B 3)and(dihydroxymethyl)(diazidomethyl)amine(A 2)(com-pare the general outline in Scheme 17).
When discussing mineral formations in caves, we often talk about stalactites and stalagmites. A stalactite is an icicle-shaped formation that hangs from the ceiling of a cave, and is produced by precipitation of minerals from water dripping through the cave ceiling. Most stalactites have pointed tips.
Full Definition of METEORITE. : a meteor that reaches the surface of the earth without being completely vaporized. â meÂ·teÂ·orÂ·itÂ·ic \ËmÄ-tÄ-É-Ëri-tik\ also meÂ·teÂ·orÂ·itÂ·iÂ·cal \-ti-kÉl\ adjective.See meteorite defined for English-language learners.See meteorite defined for kids. ADVERTISEMENT. a piece of rock or metal that has fallen to the ground from outer space: a meteor that reaches the surface of the Earth without burning up entirely. : a meteor that reaches the surface of the earth without being completely vaporized.