Formicant comes from Latin *formica* “ant” plus the adjectival suffix –ant, originally meaning “pertaining to ants”. It entered English in the early 19th century via scientific French to describe substances derived from ant secretions, especially formic acid. Today it is used chiefly in chemistry and entomology.
Widowhood comes from Old English wīfdōm, a compound of wīf “woman” and -dōm “state or condition”. The term entered Middle English as “widowhede” in the 13th‑14th centuries and later settled as “widowhood”. Its roots trace back to Proto‑Germanic *widuwō, itself from the PIE root *wid‑ “to separate, part.”
The word “catamite” entered English from Latin catamītus, which itself borrowed the term from Classical Greek κατάμιτος (katamítos). It originally meant a boy kept for sexual purposes, especially in Roman pederastic relationships. The term survived through medieval Latin into early modern English, where it retained its erotic connotation.
The word “childe” comes from Old English *cild*, meaning “child.” It entered Middle English as a term for a young nobleman or a son of a lord, especially in chivalric romance. By the early modern period the sense narrowed and today it survives only in archaic or literary contexts.
The word “inflatable” comes from Latin inflatus, the past participle of inflare ‘to blow into’. It entered English in the late 16th century as a descriptive term for anything that could be filled with air or gas. Over time it settled into the modern adjective we use for balloons, air‑beds, and many modern gadgets.
Pretend comes from Latin *praetendere*, meaning “to stretch forth” or “to put forward a claim.” The verb entered English via Old French *pretendre* in the 14th century, originally used in legal contexts before expanding to mean “to feign.” Today it describes any act of imitation or make‑believe.
Metallotherapy comes from the Greek roots *metállos* “metal” and *therapeía* “treatment”. First recorded in German scientific literature in the mid‑19th century, the term entered English by the early 20th century to describe medical uses of metals, and later broadened to alternative‑medicine practices.
Salary comes from the Latin word *salarium*, originally meaning “salt money” paid to Roman soldiers. The term traveled through Old French *salaire* before entering Middle English. Today it simply denotes regular pay for work, but its roots lie in the ancient value of salt.
Pentothal derives from the trade name of the barbiturate sodium thiopental, first marketed in the 1930s. The name fuses the Greek‑derived chemical prefix “thio‑” (sulfur) with “pent‑”, referring to its five‑carbon chain, and the suffix “‑thal” from “barbital”, the parent barbiturate family. It entered English medical vocabulary soon after its synthesis.
The English verb *collocate* comes from Latin *collocare* ‘to place together’, a compound of *com‑* ‘with’ and *locare* ‘to place’. It entered Middle English in the late 16th century, first meaning ‘to put side by side’, and later taking on a specialized linguistic sense in the 20th century.