Impenetrations

Part of speech: noun

Definitions

1. The act or process of something being unable to be penetrated or passed through
2. A circumstance in which an object or surface is secured against entry or invasion
3. A state of being impervious, where barriers or defenses remain intact against intrusion

Etymology: "Impenetrations" is simply the plural of "impenetration," a noun formed by adding the suffix "-ation" to "impenetrate." The root verb "penetrate" comes from Latin "penetrare," meaning "to enter into the innermost part," built from "penitus" ("inward"), and the prefix "in-" adds the sense of "not." Together, the word describes the quality of not being able to be entered or pierced.