forms adjectives: pertaining to, located in; In medical terminology, -eal converts nouns (often anatomical structures or processes) into adjectives that indicate relationship, location, or resemblance to that root, frequently used in diagnostics, pathology, and pharmacology to describe conditions or features “of” or “like” something. It parallels other “pertaining to” suffixes like -ac, -al, -ar, and -ic, appearing in precise descriptors such as esophageal (pertaining to the esophagus) or neural (pertaining to nerves); less common than -al but standardized in specific organ/system terms.
latin - From Latin-alis or -ealis, adjectival endings meaning “of, belonging to, relating to” (e.g., corporealis “bodily”).
Entered English via Old French and directly from Medieval Latin in scientific contexts by the 14th century, anglicized as -eal in certain borrowings while -al became more dominant.