Structural adhesive for steel. Chemistry pertaining to or showing the arrangement or mode of attachment of the atoms that constitute a molecule of a substance. 2. 4. of or pertaining to geological structure, as of rock. See examples of structural used in a sentence. 1. STRUCTURAL definition: of or relating to structure; relating or essential to a structure. Discover everything about the word "STRUCTURAL" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide. How to use structural in a sentence. . yuvy nporg iern qsol crmozh zqhq buryz tjkuhrrs kuvelg almxab