The term 'Tenens' (substitute) can be found in the crossword solution LOCUM, which is a five-letter word. A locum is a medical professional who temporarily fills a position usually left vacant by another doctor. This type of substitute is often used in hospitals and other medical facilities when a doctor is on vacation or otherwise unavailable. The term 'Tenens' is derived from the Latin word for 'HOLDING, ' which reflects the temporary nature of the position.