General Biology:
* Waxy: A term describing a substance that is coated in wax, often used to describe plant leaves or insect exoskeletons.
* Water potential: The tendency of water to move from one area to another, influenced by factors like solute concentration and pressure.
* Whiplash: A rapid, whip-like movement, often used to describe the flagella of some microorganisms.
* Whole-genome sequencing: A process to determine the complete DNA sequence of an organism.
Specific to Plants:
* Whorl: A circular arrangement of leaves, flowers, or other structures around a stem.
* Wood: The hard, strong tissue found in the stems and branches of trees and shrubs.
* Wilting: The drooping or collapsing of plant tissues due to water loss.
* Woody: A term describing plants with a hard, woody stem.
Specific to Animals:
* Webbing: The interconnected tissue between the toes of some animals, like ducks, allowing for efficient swimming.
* Wing: The flattened, feathered appendages used for flight in birds and some insects.
Specific to Cells and Molecules:
* Wobble hypothesis: A theory describing the flexible pairing of the third base in a codon with the corresponding anticodon, allowing for some genetic code redundancy.
* Water molecule: The chemical compound H₂O, essential for life.
This is just a small sample of the many biology words that start with "W." There are countless others depending on your specific area of interest within biology.