regression of nodes

regression of nodes

(ri-gresh -ŏn) See nodes.

regression of nodes

[ri′gresh·ən əv ′nōdz]
(astronomy)
The westward movement of the nodes of the moon's orbit; one cycle is completed in about 18.6 years.
References in periodicals archive ?
Observation from the study indicated that complete regression of nodes was present in only 57 patients (33%) while it was persistent in 114 patients (67%).