Fr
Symbol, Chemistry.
Definition for fr (2 of 4)
FR
Real Estate.
family room.
freight release.
Definition for fr (3 of 4)
Definition for fr (4 of 4)
Fr.
abbreviation
Example sentences from the Web for fr
British Dictionary definitions for fr (1 of 5)
fr
the internet domain name for
France
British Dictionary definitions for fr (2 of 5)
Fr
abbreviation for
Christianity
- Frater
- Father
the chemical symbol for
francium
Word Origin for Fr
(for sense 1a) Latin: brother
British Dictionary definitions for fr (3 of 5)
FR
abbreviation for
Faeroes (international car registration)
British Dictionary definitions for fr (4 of 5)
fr.
abbreviation for
franc
British Dictionary definitions for fr (5 of 5)
Word Origin for Fr.
(sense 4) from German
Frau
Medical definitions for fr
Fr
The symbol for the elementfrancium
Scientific definitions for fr (1 of 2)
Fr
The symbol for francium.
Scientific definitions for fr (2 of 2)
francium
[ frăn′sē-əm ]
Fr
An extremely unstable, radioactive element of the alkali group. It is the heaviest metal of the group. Francium occurs in nature, but less than 28.35 g (1 oz) is present in the Earth's crust at any time. It has approximately 19 isotopes, the most stable of which is Fr 223 with a half-life of 21 minutes. Atomic number 87; valence 1. See Periodic Table.