Definition and meaning of Kelvin scale:

Kelvin scale - an absolute scale of temperature in which each degree equals one kelvin. Water freezes at 273.15 K and boils at 373.15 K

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of kairomone:

kairomone - a class of pheromone which is an interspecific chemical secretion that benefits the receiver but not the emitter; also defined as a pheromone produced by organisms to attract a mate, though in some cases can also undesirably attract the attention of a predator

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of Karst:

Karst - a limestone terrain characterized by sinks, caverns, abrupt ridges, protuberant rocks and drainage characteristics due to greater solubility of limestone in natural waters than is common. The term is derived from the geographical name of part of Slovenia

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of Karst cave:

Karst cave - a cave caused by dissolution of limestone by water

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of karyogamy:

karyogamy - a process of fusion of the nuclei of two sex cells or gametes; the second step in syngamy

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of karyokinesis:

karyokinesis - the cellular process of nuclear division

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of karyology:

karyology - the study of the nucleus of a cell

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of karyolysis:

karyolysis - the disintegration and dissolution of a cell nucleus upon death of the cell

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of karyotype:

karyotype - the entire chromosome complement of an individual cell, as seen during the mitotic phase

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of karyorrhexis:

karyorrhexis - the rupture of a cell nucleus, releasing disintegrated chromatin

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of kenozooid:

kenozooid - a small bryozoan heterozooid that strengthens and supports the colony, as well as fill spaces; long, branching, tubular, transparent stolons which extend above the substratum and to which the feeding individuals (autozooids) are attached

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of ketone:

ketone - any of a class of organic compounds that is produced during fat metabolism. Ketones contain a carbonyl group, CO, attached to two alkyl groups, such as CH3COCH3

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of key:

key - a small, low coastal island or emergent reef of sand or coral; flat mound of sand and admixed coral fragments built upon a reef flat or just above high tide level. A synonym of cay

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of key character:

key character - in taxonomy, a diagnostic character used in a taxonomic key

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of key factor analysis:

key factor analysis - a statistical treatment of population data designed to identify factors most responsible for change in population size

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of key stimulus:

key stimulus - in ethology or animal behavior, the stimulus which releases a fixed action pattern

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of keystone predator:

keystone predator - the dominant predator or the top predator that has a major influence on community structure

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of keystone species:

keystone species - a species that is disproportionately important in the maintenance and balance of its community integrity

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of kilobase, kb:

kilobase (kb) - a length unit equal to 1000 base pairs of a double-stranded nucleic acid molecule; 1000 pairs of nucleotide bases in DNA

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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Definition and meaning of kinetic energy:

kinetic energy - energy associated with motion

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

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