allowed

[ uh-loud ]

adjective

1. permitted or authorized:

   In chess, there are only 64 squares with 16 pieces and very specific allowed moves.

2. Physics. involving a change in quantum numbers, permitted by the selection rules:

   allowed transition.

Other Words From

• un·al·lowed adjective

Word History and Origins

Origin of allowed¹

First recorded in 1300–50; allow, -ed ²

Example Sentences

Evolutionarily, these alternative sites may have been beneficial to soybeans and other plants because they allowed for increased complexity and adaptability under a limited genome.

From Science Daily

As now written, the proposed Citywide Housing Incentive program would enable developers to build more than currently allowed in commercial zones and in residential neighborhoods where apartment buildings are already allowed.

From Los Angeles Times

"There are EU regulations around the use of lead, but piezoelectrics are one of the last remaining mainstream technologies allowed to contain this substance because there is no high-performance alternative," Associate Professor Guerin explained.

From Science Daily

The configuration with the best results allowed the TCM reactor to heat the air exiting the building, which is at the same temperature and humidity as the indoor air.

From Science Daily

Alford remains most in awe of the man Dobbins has grown into as he has never once allowed the dark days of physical therapy dim his smile.

From Los Angeles Times

Related Words

• acknowledged
• approved
• authorized
• confirmed
• conventional
• customary
• endorsed
• established
• fashionable
• popular
• preferred
• received
• recognized
• sanctioned
• time-honored
• universal
• welcomed