isobar
Definition from Wiktionary, the free dictionary
See also Isobar
Contents |
English[edit]
Etymology[edit]
From Ancient Greek ἴσος (isos, “equal”) + βάρος (baros, “weight”)
Noun[edit]
Wikipedia isobar (plural isobars)
- (meteorology) A line drawn on a map or chart connecting places of equal or constant pressure.
- (nuclear physics) Either of two nuclides of different elements having the same mass number.
- (thermodynamics) A set of points or conditions at constant pressure.
Usage notes[edit]
- Meteorology
- In meteorology, 'isobar' most often refers to a line drawn through all points of equal atmospheric pressure along 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 map of the air unaffected by surface heating or cooling. The pattern of isobars has always been a main feature of surface chart analysis. Until recently it was standard procedure to draw isobars at 3-millibar intervals. However, the advent of constant pressure charts for upper-air analysis has brought about the use of 4-millibar intervals to simplify the conversion from surface isobars to 1,000-millibar contour lines.
Translations[edit]
A line on a map connecting places of equal pressures
either of two nuclides
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.
Translations to be checked
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See also[edit]
German[edit]
Adjective[edit]
isobar (not comparable)
Declension[edit]
Declension of isobar
| gender | singular | plural | |||
|---|---|---|---|---|---|
| masculine | feminine | neuter | all genders | ||
| predicative | er ist isobar | sie ist isobar | es ist isobar | sie sind isobar | |
| strong declension (without article) |
nominative | isobarer | isobare | isobares | isobare |
| genitive | isobaren | isobarer | isobaren | isobarer | |
| dative | isobarem | isobarer | isobarem | isobaren | |
| accusative | isobaren | isobare | isobares | isobare | |
| weak declension (with definite article) |
nominative | der isobare | die isobare | das isobare | die isobaren |
| genitive | des isobaren | der isobaren | des isobaren | der isobaren | |
| dative | dem isobaren | der isobaren | dem isobaren | den isobaren | |
| accusative | den isobaren | die isobare | das isobare | die isobaren | |
| mixed declension (with indefinite article) |
nominative | ein isobarer | eine isobare | ein isobares | (keine) isobaren |
| genitive | eines isobaren | einer isobaren | eines isobaren | (keiner) isobaren | |
| dative | einem isobaren | einer isobaren | einem isobaren | (keinen) isobaren | |
| accusative | einen isobaren | eine isobare | ein isobares | (keine) isobaren | |