What is the meaning of Tagma?

A specialized, structured, grouping of functionally related segments, or analogous subunits, into units such as the head, the thorax, and the abdomen, particularly in various Arthropoda and Vertebrata.

A specialized, structured, grouping of functionally related molecules, forming the basis the physiology and structure of larger units such as cells and tissues.

A military unit of battalion or regiment size, in the Byzantine empire of the 8th - 11th centuries.

tagma

tagma

Source: wiktionary.org