Here are the definitions for the terms used in a spreadsheet: a)* Cell: A cell is the fundamental unit of a spreadsheet, formed by the intersection of a row and a column. It is where data, formulas, or functions are entered. b) Column and row: A column is a vertical series of cells, typically identified by letters (e.g., A, B, C). A row* is a horizontal series of cells, typically identified by numbers (e.g., 1, 2, 3). c)* Worksheet: A worksheet (also known as a spreadsheet) is a single page within a workbook, consisting of a grid of cells organized into rows and columns. It is the primary area for data entry and manipulation. d)* Cell address: A cell address is the unique identifier for a specific cell, formed by combining its column letter and row number (e.g., A1, B10, C25). It specifies the cell's location. e)* Workbook: A workbook is a file that contains one or more worksheets. It serves as a container for organizing and storing related data and calculations across multiple sheets.