The Collaborative International Dictionary
Sustentacular
Sustentacular \Sus`ten*tac"u*lar\, a. [See Sustenance.] (Anat.) Supporting; sustaining; as, a sustentacular tissue.
Wiktionary
sustentacular
a. (context anatomy English) Serving to support or sustain.
WordNet
sustentacular
adj. serving to sustain or support; "sustentacular cells"
Wikipedia
Usage examples of "sustentacular".
In the glial processes you have sustentacular tissue, probably of epiblastic origin, that.