sustentacular

/ˌsʌstənˈtækjələr/
adjective
  1. Relating to supporting or sustaining something, especially in a biological or structural context.
    • The architect designed sustentacular beams to hold up the massive ceiling.
    • In the eye, sustentacular tissues help maintain the shape of the retina.
    • The sustentacular cells in the nervous system provide essential support for neurons.
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