TlI

TLI is a three-letter initialism that can refer to multiple terms across different domains. There is no single universally accepted definition.

In computing, Transport Layer Interface (TLI) denotes a historic portable API for network communications. It provided an abstract transport-layer interface used by early UNIX systems and several networking libraries as an alternative to sockets. Over time, many systems adopted the X/Open Transport Interface (XTI) or the BSD/socket APIs, which led to the TLI API being largely superseded.

In education and professional development, TLI is commonly used for programs such as Teacher Leadership Institute or Technology Leadership Institute, which aim to develop instructional leadership, curricular innovation, and technology integration among teachers and schools.

In other contexts, TLI is used as the initials of various organizations, conferences, and standards.

Because acronyms can overlap across fields, the intended meaning is typically clarified by context, organization name, or accompanying descriptions. If TLI appears in a document, locate definitions, glossary entries, or introductory sections to determine the specific meaning.