1. Plural of copula; words or phrases that link a subject to a subject complement, typically expressing a state of being.
Usage: Grammar term; Most common copulae in English are forms of 'be' (am, is, are, was, were, be, being, been)
2. In logic and philosophy, connections or relationships between concepts or propositions.
Usage: Formal/academic usage; Less common in everyday English

Examples

• In the sentence 'She is a teacher,' the word 'is' is one of the most common copulae in English.
• The copulae in these sentences help establish relationships between subjects and their descriptions.
• Forms of 'be' are not the only copulae; verbs like 'seem,' 'appear,' and 'become' also function as linking verbs.
• Understanding copulae is essential for analyzing sentence structure in grammar.
• The philosopher discussed various copulae used to connect subjects and predicates in logical statements.