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angiosperm
(Encyclopedia) CE5 Life cycle of an angiosperm angiospermangiospermănˈjēəspûrmˌ [key], term denoting seed plants in which the ovules, or young seeds, are enclosed within the ovary (that part of…purine
(Encyclopedia) CE5 Purines found in deoxyribonucleic acid (DNA) purine, type of organic base found in the nucleotides and nucleic acids of plant and animal tissue. The German chemist Emil Fischer…pyramid, in geometry
(Encyclopedia) CE5 Pyramid pyramid, in geometry, solid figure bounded by a polygon (the base, or directrix) and the surface generated by a moving line (the generator) passing through a fixed…parabola
(Encyclopedia) CE5 Parabola parabolaparabolapərăbˈələ [key], plane curve consisting of all points equidistant from a given fixed point (focus) and a given fixed line (directrix) (see illustration…English horn
(Encyclopedia) CE5 English horn English horn, musical instrument, the alto of the oboe family, pitched a fifth lower than the oboe and treated as a transposing instrument. It has a pear-shaped…zodiac
(Encyclopedia) CE5 Signs of the zodiac CEE zodiaczodiaczōˈdēăk [key] [Gr. zoion=animal], in astronomy, zone of the sky that includes about 8° on either side of the ecliptic. The apparent paths…mansard roof
(Encyclopedia) CE5 Mansard roof mansard roofmansard roofmănˈsärd [key], type of roof, so named because it was frequently used by the French architect François Mansart. It was not devised by him…arginine
(Encyclopedia) CE5 argininearginineärˈjənĭn [key], organic compound, one of the 20 amino acids commonly found in animal proteins. Only the l-stereoisomer participates in the biosynthesis of…cylinder
(Encyclopedia) CE5 Cylinder cylinder, in mathematics, surface generated by a line moving parallel to a given fixed line and continually intersecting a given fixed curve called the directrix; each…alanine
(Encyclopedia) CE5 alaninealanineălˈənēnˌ [key], organic compound, one of the 20 amino acids commonly found in animal proteins. Only the l-stereoisomer participates in the biosynthesis of proteins…Trending
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