See Also: ayah(dictionary)

isobar (iou) and ayah (iou)


isobar (iou)



isobar noun. In sense 2 orig. isobare. M19.
[from Greek isobaros of equal weight, from iso- ISO- + bare-, baros weight, barus heavy.]
Physical Geography & Meteorology. A line (on a map or chart, or imaginary) connecting places at which the atmospheric pressure is the same (at a given time, or on average). M19.
Physics. A line or formula that represents a physical system at constant pressure. L19.
Physics. Each of two or more nuclides which have the same mass number but different atomic numbers (and so belong to different elements). E20.

ayah (iou)



ayah noun. L18.
[Portuguese aia fem. of aio tutor.]
A nurse or maidservant, esp. of Europeans in India, SE Asia, etc.