The term 'syllogism' is a direct loan from Latin syllogismus, which itself originates from the Greek syllogismos, meaning 'inference, conclusion'. This Greek noun is derived from the verb syllogizesthai ('to reckon together, compute'), which is a compound of syn- ('together') and logizesthai ('to reason, count'), from logos ('reason, word'). The literal sense of 'bringing reasons together' perfectly captures the logical structure of a syllogism, where two premises are combined to yield a conclusion. This method of deductive reasoning was systematically analyzed by Aristotle, whose work cemented the term's technical meaning in logic and philosophy. Thus, the word's journey from a Greek concept of combined reasoning to a precise term in formal logic illustrates the abstraction of everyday language into specialized academic vocabulary.

Structure: syl (together) + log (speech, reason) + ism (doctrine, system) syl: From Greek syn- (together, with). A prefix indicating union or combination. log: From Greek logos (word, speech, reason, principle). A root denoting discourse or reasoning. ism: From Greek -ismos, a suffix forming nouns of action or of state, often indicating a system, principle, or doctrine.