Browse Dictionary by Letter

Word Explorer
Children's Dictionary
Help
Help
Help
A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z
biological of or having to do with biology. [2 definitions]
biology the science that studies the growth and life processes of living things.
bioluminescence light given off naturally by certain kinds of insects, fish, or bacteria. The bioluminescence of fireflies allows them to blink on and off in the dark.
biomass the total amount of living things in a particular environment, measured by mass per unit of area or volume.
bionic an electronic or mechanical device that replaces or helps something natural. An artificial leg is one kind of bionic device.
birch a tree or shrub with hard wood and smooth bark that can be peeled off.
bird an animal with two wings, two feet, and a body covered with feathers. Most birds can fly. Birds are warm-blooded animals with skeletons inside their bodies. Birds lay eggs with hard shells. Robins, eagles, chickens, and ostriches are a few of the many kinds of birds.
birdhouse something constructed by humans as a place for a bird to build its nest. A birdhouse often looks like a small, simple house.
birds of a feather a group of people who have similar interests, values, opinions, or backgrounds. (from the expression "Birds of a feather flock together.")
birth the act or fact of being born. [3 definitions]
birthday the calendar day and month of one's birth, usually celebrated each year as that date occurs.
birthmark a mark or mole on the skin present from birth.
birthplace the place of birth or origin of a person, idea, or movement.
birthright a right, privilege, or property to which one is entitled by birth.
biscuit a small, round-shaped bread for one person made with baking powder or baking soda instead of yeast. Biscuits are not usually sweet. [3 definitions]
bisect to cut or split into two equal parts. [2 definitions]
bishop a clergyman who holds a high position in certain Christian churches. A bishop is often in charge of a group of churches. [2 definitions]
bison a very large mammal with a large head, humped shoulders, and short curved horns. Bison used to roam the plains of North America in large herds, but they were hunted until they were almost extinct. North American bison are also called buffalo, but they are not related to the true buffalo of Africa and Asia. Bison have hooves and are closely related to cattle. Bison eat only plants and chew their cud. [2 definitions]
bit1 the metal part of a bridle that is placed in the mouth of a horse and used to control it. [2 definitions]
bit2 a small amount; little piece. [2 definitions]
bit3 the smallest unit of information in a computer.