Learn how to say Data correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word data:
facts and statistics collected together for reference or analysis:
there is very little data available
the quantities, characters, or symbols on which operations are performed by a computer, which may be stored and transmitted in the form of electrical signals and recorded on magnetic, optical, or mechanical recording media.
Philosophy things known or assumed as facts, making the basis of reasoning or calculation.
mid 17th century (as a term in philosophy): from Latin, plural of datum
In Latin, data is the plural of datum and, historically and in specialized scientific fields, it is also treated as a plural in English, taking a plural verb, as in the data were collected and classified. In modern non-scientific use, however, it is generally not treated as a plural. Instead, it is treated as a mass noun, similar to a word like information, which takes a singular verb. Sentences such as data was collected over a number of years are now widely accepted in standard English.