Definition: The word "allotropic" is an adjective that describes substances that can exist in different forms, particularly in the context of certain elements. When an element is allotropic, it means that it can have different structural forms in the same physical state.
In general usage, "allotropic" is mainly used in chemistry. It doesn't have significant alternate meanings outside this context.
There are no common idioms or phrasal verbs that include the word "allotropic," as it is a specialized term used primarily in scientific discussions.
In conclusion, "allotropic" is a specialized term used in chemistry to describe elements that can exist in different structural forms, such as carbon and sulfur.