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Definition of Tel
1. Abbreviation. (automotive aviation organic chemistry) tetraethyllead (or tetraethyl lead, tetra-ethyl lead); a gasoline additive to boost octane rating ¹
2. Noun. telegraph ¹
3. Noun. telegram ¹
4. Noun. telephone ¹
5. Noun. A hill or mound. (non-gloss definition Used especially for land features in the Middle East and North Africa) ¹
¹ Source: wiktionary.com
Definition of Tel
1. an ancient mound in the Middle East [n -S]