Multicolumn

Multicolumn[list,cols] is an object that formats with the elements of list arranged in a grid with the indicated number of columns.

Multicolumn[list,{rows,Automatic}] formats as a grid with the indicated number of rows.

Multicolumn[list,{rows,cols}] formats as a grid with the indicated number of rows and columns.

Multicolumn[list] formats with the elements of list in a roughly square arrangement.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.