Which term describes prelingually deafness?

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Onset of deafness in relation to when language develops is the idea being tested. Prelingually deaf describes someone who is deaf before they acquire language, typically before the age when speech would normally develop, so language learning often occurs through sign language or other visual means. This timing matters because it shapes communication access and how a person navigates the environment, which is especially relevant in orientation and mobility training. Postlingually deafness, by contrast, refers to losing hearing after language has already been established, which changes communication dynamics and supports needs. The term deafened is a broader label for acquired hearing loss but doesn’t specify when language was learned, making it less precise for this distinction. Echolocation is not a term describing hearing status at all; it’s a navigational technique used by some individuals.