Pronunciation: [hˈɛdə ɹˈə͡ʊ] (IPA) 
The correct spelling of the term "header row" is /ˈhɛdər roʊ/. The first syllable is pronounced with the short "e" sound as in "bed," while the second syllable is pronounced with the "uh" sound as in "but." The "d" sound in "header" is pronounced as normal, while the "r" in "row" is pronounced with a rolled or trilled sound, depending on the dialect. The term refers to the top row of a table in which column headers are located.
A header row is a term primarily used in computer science and data processing to refer to the first row or line of a table or spreadsheet that contains labels or names for the columns or categories within the table. It is typically placed at the top of the table to provide a readable and clear structure to the data. The purpose of a header row is to provide a brief description or title for each column, which makes it easier for users to understand and interpret the information presented in the subsequent rows.
The header row serves as a reference point for the content within the table and helps establish the context and meaning of the data. It often includes concise and descriptive labels that accurately represent the data types or contents of the corresponding column. By organizing and categorizing the data in this manner, the header row aids in the efficient analysis, sorting, and searching of information within the table.
In addition to labeling columns, the header row may also contain other important elements, such as drop-down menus or filtering options that allow users to manipulate and interact with the data set. Overall, the header row acts as a crucial component of tables and spreadsheets, ensuring that data is well-structured and easily comprehensible.
The word "header" comes from the late Middle English word "heder" which means "chief, uppermost" or "one who heads or leads". It originated from the Old English word "hēafod", meaning "head".
The term "row" has its roots in the Old English word "rāw" or "rǣw", which means "line" or "series". It is derived from the Old Norse word "rǫ́", meaning "row" or "number of men", and can be traced back to the Proto-Germanic word "rahiwō".
Therefore, the etymology of the term "header row" suggests that it refers to the uppermost or leading line or series in a table or spreadsheet.
