immutabilis

Immutabilis is a Latin adjective meaning "unchangeable" or "immutable," deriving from in- "not" + mutabilis "changeable." In classical and modern usage, the term appears in academic and literary contexts as a descriptor or epithet.

In taxonomy, immutabilis has occasionally served as a species or subspecies epithet in botanical and zoological names, signaling that the described organism was thought to display constant traits relative to related forms. While not a formal taxonomic rank itself, such epithets follow Latin conventions used in binomial names.

In philosophy and theology, immutability is a central property attributed to certain entities. For example, some traditions ascribe immutability to the divine, or to abstract objects such as mathematical truths, contrasting with mutable physical phenomena.

In modern computing and information theory, the related concept of immutability underpins data structures and functional programming. While "immutabilis" is not a standard term in programming syntax, the idea aligns with immutable objects, persistent data structures, and versioned records that do not change after creation.

The term appears in literature and inscriptions as a Latin word on monuments or scholarly works to evoke stability, constancy, or ethical steadfastness.