A report of a respondent of a survey or an interview about his internal state or perception, such as of pain, contrasting to measurement using a measuring device and to observations made by other people.

Respond to something, such as a survey, with data about oneself.

(email, computing, uncountable) A feature in e-mail software that sends automatic replies, used for instance when the recipient of a message is on holiday.

(sports, television) A video recording of an action that can be replayed immediately after being recorded.

plural of repeat offender

A person who has previously offended against the law, often someone who may be deemed incorrigible. / One who performs a specific (often undesirable) action on multiple occasions.

plural of double replacement reaction

A chemical reaction involving a change of chemical bonds, so that two compounds become two different compounds, in the form AB+CD→AD+CB

plural of double-replacement reaction

A chemical reaction involving a change of chemical bonds, so that two compounds become two different compounds, in the form AB+CD→AC+BD