If a product contains bleach (peroxide), it will whiten your teeth. But not all treatments are created equal. It's the concentration or percent of hydrogen peroxide a teeth-whitening system contains and the amount of time it's in contact with your teeth that determines its effectiveness.
Definition of fecund - producing or capable of producing an abundance of offspring or new growth; highly fertile Definition of fecund - producing or capable of producing an abundance of offspring or new growth; highly fertile
LINK / CITE ADD TO WORD LIST. adjective. The definition of fecund is someone capable of getting pregnant and giving birth, or is being capable of having large amounts of offspring. A woman who can get pregnant is an example of someone who would be described as fecund.