2. Initialism. the old series; the original series — in reference to an old iteration of a series ¹
¹ Source: wiktionary.com
Medical Definition of TOS
1.
Lexicographical Neighbors of TOS
TNM staging TNN TNO TNOs TNR TNT TO TOC TOCP TOEFL | TOPV TOR TORCH syndrome TORFL TOS (current term) TOSET TOSH TOTP TPAP TPB | TPC TPH TPHA test TPI TPI test TPM TPN TPO TPP |