Av 
(äv, ôv) also Ab (äb, äv, ôv)
(äv, ôv) also Ab (äb, äv, ôv)n.
The fifth month of the year in the Jewish calendar. See Table at calendar.
[Mishnaic Hebrew 'āb, from Akkadian abu, a month name (July/August).]
- radicchio
- radices
- radicle
- radii
- radio
- radio-
- radioactive
- radioactive decay
- radioactively
- radioactive series
- radioactivity
- radio astronomy
- radio beacon
- radio beam
- radiobiological
- radiobiologist
- radiobiology
- radiobroadcast
- radiocarbon
- radiocarbon dating
- radiochemical
- radiochemistry
- radio collar
- radio compass
- radioecological