def excel_column(column: int) -> str:
    """Convert column position (indexed from 0) to Excel column name.

    Args:
        column (int): Column index (position from 0).

    Returns:
        str: Definition of column in Excel.
    """
    letter_list = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
    result = []
    column += 1
    while column:
        column, rem = divmod(column - 1, 26)
        result[:0] = letter_list[rem]
    return ''.join(result)