| Acronym | Definition |
|---|
| SINC➣Species in Need of Conservation (Kansas) |
| SINC➣Site of Interest for Nature Conservation |
| SINC➣Sinus Cardinalis (function) |
| SINC➣Survey on the Importance of Nature to Canadians |
| SINC➣Special Instructions to Communicators |
| SINC➣School Is Not Compulsory (UK) |