BioScience Dictionary

 
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 | Ot.

Found Ray 4 times.

Displaying results 1 to 10.

1. Ray
* A zygomorphic flower in the family Asteraceae; a radial band of cells traversing the conducting elements in woody stems. * Of a compound umbel, one of the first (lower) series of branches of the inflorescence main stem.

2. Ray-finned
Taxonomic group of fish, such as trout, tuna, salmon, and bass, that have thin, bony supports holding the fins away from the body and an internal swim bladder that changes the buoyancy of the body; one of the two main types of bony fishes.

3. Raynaud's disease
Raynaud's disease affects usually women starting in the late teens with Raynaud's phenomenon type of clinical picture but is bilateral and symmetric.

4. Raynaud's phenomenon
Raynaud's phenomenon is characterized by intermittent blanching and cyanosis of the fingers that is precipitated by cold or emotion. This condition usually involves only a few fingers. The attack can terminate suddenly with throbbing, paresthesia and rubor. Several clinical conditions are associated with Raynaud's phenomenon, among them: collagen vascular diseases, occupational exposure to toxins, thoracic outlet syndrome .

View web definitions »

Learn more about Ray »