(botany) One of the spots upon a stem where buds and intercalary meristems occur, usually marking the end of a season's growth. / (computing theory) A node, in a tree, that has no children.

plural of S-A node

plural of sinoatrial node

plural of sinus node

(anatomy) Synonym of sinoatrial node.

plural of SA node

(anatomy) A group of cells located in the wall of the right atrium of the heart that originates the impulses stimulating the heartbeat.

Abbreviation of sinoatrial node.

(botany) Alternative form of leaf node

(anatomy) Abbreviation of sinoatrial node.