allobar en · NOUN
Etymology
From allo- + bar. According to Alfred J. Henry, the meteorology sense was coined in Swedish by Nils Gustaf Ekholm.
Meanings
- Any form of an element having a different isotopic composition to that of the natural element, and thus a different atomic weight.
-
An area where the atmospheric pressure changes.
Highlighted in Alfred Henry's 1916 manual, Weather Forecasting in the United States, pressure-change charts have their own terminology, with allobar describing an area where the barometric pressure has changed by 0.1 inch or more in 12 hours[…]
1999, Mark Monmonier, Air Apparent: How Meteorologists Learned to Map, Predict, and Dramatize Weather, page 82:
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| allobars | Number=Plur | lexicographic |