Definition

Relating to the act of replacing one thing with another or using a substitute.

Example

In chemistry, substitutional alloys are formed when one metal replaces another in the crystal structure.

Conversation

I heard they're using a substitutional ingredient in the recipe now.

Oh really? What are they replacing?

They said it was for health reasons, but I’m not sure it’s a good idea.

Yeah, sometimes those substitutional changes can be hit or miss.

Synonyms & Antonyms

Root Explanation

Substitutional → It is formed from "sub-" (meaning under or in place of) and "stituere" (meaning to place or set). The word refers to something that is placed in the place of another, hence relating to substitution.

Memory Tip

Think of something being 'placed in the place of' another — 'sub-' means under or in place of, and 'stituere' means to place.

Visually Confused Words