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OTP

(computing) : a password that is valid for only one login session or transaction.

ˈɑtˈpɑ167 viewsLast reviewed Jun 29, 2026+ Add a definition
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US
#1·Apr 27, 2026US

(computing) : a password that is valid for only one login session or transaction.

For parents

OTP means: : a password that is valid for only one login session or transaction.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.

For ESL learners

OTP means: : a password that is valid for only one login session or transaction.. Register: neutral, standard English. A common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; native speakers immediately notice when slang appears in formal contexts, so always check the surrounding register before producing it yourself.

Cluster: general
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US
#2·Apr 27, 2026US

(fandom) : the romantic pairing preferred by an author or reader of fan fiction.

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For specific readers

OTP means: : a password that is valid for only one login session or transaction.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.

Why is this section here?

Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.

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