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hibernation

(Encyclopedia)hibernation hīˌbərnāˈshən [key] [Lat.,= wintering], practice, among certain animals, of spending part of the cold season in a more or less dormant state, apparently as protection from cold when ...

Nibelungen

(Encyclopedia)Nibelungen –lētˌ [key] [song of the Nibelungen] is a long Middle High German epic by a south German poet of the early 13th cent. It includes pagan legends and traditions but is patently the produc...

Millay, Edna St. Vincent

(Encyclopedia)Millay, Edna St. Vincent mĭlāˈ [key], 1892–1950, American poet, b. Rockland, Maine, grad. Vassar College, 1917. One of the most popular poets of her era, Millay was admired as much for the bohemi...

perennial

(Encyclopedia)perennial, any plant that under natural conditions lives for several to many growing seasons, as contrasted to an annual or a biennial. Botanically, the term perennial applies to both woody and herbac...

Roland

(Encyclopedia)Roland rōˈlənd [key], the great French hero of the medieval Charlemagne cycle of chansons de geste, immortalized in the Chanson de Roland (11th or 12th cent.). Existence of an early Roland poem is ...

synodic period

(Encyclopedia)synodic period sĭnŏdˈĭk [key], in astronomy, length of time during which a body in the solar system makes one orbit of the sun relative to the earth, i.e., returns to the same elongation. Because ...

price

(Encyclopedia)price, amount of money for which a unit of goods or services is exchanged. Price is equivalent to market value and may or may not measure the intrinsic value of the goods or services to the buyer or s...

Cepheid variables

(Encyclopedia)Cepheid variables sēˈfēĭd [key], class of variable stars that brighten and dim in an extremely regular fashion. The periods of the fluctuations (the time to complete one cycle from bright to dim a...

Piero della Francesca

(Encyclopedia)Piero della Francesca pyĕˈrō dĕlˈlä fränchāsˈkä [key], c.1420–1492, major Italian Renaissance painter, b. Borgo San Sepolcro (modern Sansepolcro). All his masterpieces were created in town...

gonadotropic hormone

(Encyclopedia)gonadotropic hormone gōˌnădətrŏpˈĭk [key] or gonadotropin, any one of three glycoprotein (see protein) hormones released by either the anterior pituitary gland or the placenta (the organ in whi...