4 English Synonyms for STD

Definition: 1. (aviation) The design diving speed of an aircraft; the highest speed which the aircraft is planned to reach during flight testing. Always higher than VNE (the speed that must not be exceeded in service).

There are 2 definitions of the word VD

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Definition: 1. (disease) Initialism of sexually transmitted infection also S.T.I.

There are 3 definitions of the word STI

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Definition: 1. (telephony, British spelling) A system of automatic connection of trunk calls through dialling a phone number without operator assistance.

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Definition: 1. (disease) Any of various diseases that are usually contracted through sexual contact.

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