Being darker than standard, especially browner.
Having a sunburn.
Carbonised.
Damaged or injured by fire or heat.
Of land, etc.: capable of growing abundant crops; productive.
Of one's imagination, etc.: active, productive, prolific.
Capable of developing past the egg stage.
Not itself fissile, but able to be converted into a fissile material by irradiation in a reactor.
Capable of reproducing; fecund, fruitful.