S

Scroll Lock mode
When the Scroll Lock key is pressed, certain keys start different actions.
selection
The cell or cells that will receive the actions of keys and commands. The selection is surrounded by a wide dark border.
series
Two or more cells whose contents form a pattern. AutoFill can continue the series.
sheet
Short for worksheet
sheet tab
An area at the bottom of a sheet that shows the name of the sheet.
shift data
When copying and pasting, you  may be asked if you want to shift the data down or to the right. Data is moved over enough cells for the pasted cells to fit.
sort
To rearrange rows of data in an order. The order can be alphabetical, numerical, or based on a custom list.
Sort Ascending
A button which will sort selected cells in a column into alphabetical or numerical order. If multiple cells are selected in each row or whole rows are selected, the sorting is based on the first cell in each row of the selection. 
Sort Descending
A button which will sort selected cells in a column into reverse alphabetical or numerical order. If multiple cells are selected in each row or whole rows are selected, the sorting is based on the first cell in each row of the selection. 
Sort dialog
A dialog which offers more choices than the Sort buttons. You can sort on 3 different columns. For each one you can choose to sort ascending, descending, or use a custom list.
split cell
To divide a cell that was formed by merging cells.
Split view
A view which allows you to see 2 or 4 parts of the sheet at the same time
spreadsheet
Sheet or worksheet- formed of rows and columns.
standard width
The default width for a column.
Subtotal
A total of part of a larger set of data, usually of a certain group.