We found one dictionary that defines the word supporting structures:

General (1 matching dictionary)

1. supporting structures: Vocabulary.com

(Note: See supporting_structure as well.)

Definitions from WordNet (supporting structure) ▸ noun:  a structure that serves to support something ▸ Also see supporting_structure ▸ Words similar to supporting structures ▸ Usage examples for supporting structures ▸ Idioms related to supporting structures ▸ Wikipedia articles (New!) ▸ Words that often appear near supporting structures ▸ Rhymes of supporting structures ▸ Invented words related to supporting structures