isobar
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English
[edit]Alternative forms
[edit]Etymology
[edit]From Ancient Greek ἴσος (ísos, “equal”) βάρος (báros, “weight”), equivalent to iso- bar-.
Noun
[edit]isobar (plural isobars)
- (meteorology) A line drawn on a map or chart connecting places of equal or constant pressure.
- (thermodynamics) A set of points or conditions at constant pressure.
- (nuclear physics) Either of two nuclides of different elements having the same mass number.
Usage notes
[edit]- (meteorology):
- In meteorology, the term isobar most often refers to a line drawn through connected points of equal atmospheric pressure on a given reference surface — such as a constant height surface (notably mean-sea-level on surface charts), the vertical plane of a synoptic cross section, or a layer of the air unaffected by surface heating or cooling. The pattern of isobars has always been a main feature of surface chart analysis. (See Surface weather analysis on Wikipedia.Wikipedia ) It was standard procedure to draw isobars at 3-millibar intervals until the recent advent of constant pressure charts for upper-air analysis brought about the use of 4-millibar intervals to simplify the conversion from surface isobars to 1,000-millibar contour lines.
Derived terms
[edit]Translations
[edit]line on a map connecting places of equal pressure
|
(thermodynamics) set of points at constant pressure
either of two nuclides
See also
[edit]Anagrams
[edit]Danish
[edit]Adjective
[edit]isobar (neuter isobart, plural and definite singular attributive isobare)
German
[edit]Pronunciation
[edit]Adjective
[edit]isobar (strong nominative masculine singular isobarer, not comparable)
Declension
[edit]Positive forms of isobar (uncomparable)
number & gender | singular | plural | |||
---|---|---|---|---|---|
masculine | feminine | neuter | |||
predicative | er ist isobar | sie ist isobar | es ist isobar | sie sind isobar | |
strong declension (without article) |
nominative | ||||
genitive | |||||
dative | |||||
accusative | |||||
weak declension (with definite article) |
nominative | der | die | das | die |
genitive | des | der | des | der | |
dative | dem | der | dem | den | |
accusative | den | die | das | die | |
mixed declension (with indefinite article) |
nominative | ein | eine | ein | (keine) |
genitive | eines | einer | eines | (keiner) | |
dative | einem | einer | einem | (keinen) | |
accusative | einen | eine | ein | (keine) |
Further reading
[edit]Categories:
- English terms derived from Proto-Indo-European
- English terms derived from the Proto-Indo-European root *gʷreh₂-
- English terms borrowed from Ancient Greek
- English terms derived from Ancient Greek
- English terms prefixed with iso-
- English lemmas
- English nouns
- English countable nouns
- en:Meteorology
- en:Thermodynamics
- en:Nuclear physics
- en:Isolines
- en:Weather
- Danish lemmas
- Danish adjectives
- da:Thermodynamics
- German 3-syllable words
- German terms with IPA pronunciation
- German terms with audio pronunciation
- Rhymes:German/aːɐ̯
- Rhymes:German/aːɐ̯/3 syllables
- German lemmas
- German adjectives
- German uncomparable adjectives
- de:Meteorology
- de:Thermodynamics