English speakers use date for a numbered day, for a planned meeting, and for the oblong fruit of the date palm. The first two belong to one family. The fruit does not. Around 1300, Middle English borrowed two French words that happened to look and sound the same. One came from a Latin participle meaning given. The other came, through Provençal and Latin, from a Greek word for finger. The origin of the word date, in the sense that fills diaries and passports, is a story about how clerks labeled letters, not about fruit or romance.
A formula that named a day
Roman and later Latin correspondence did not open with the calendar line modern letters use. The usual close recorded that a document had been given — handed over, issued — at a place and on a named day. A typical formula ran along the lines of given at Rome on the day before the Kalends of May. The key word was the past participle of Latin dare, to give: neuter datum in some classical patterns, feminine data when the understood noun was a letter or another feminine word.
Medieval Latin turned that participle into a noun. Data no longer merely described the act of issuing; it named the time, and often the place, written in the formula. Old French took the form date by the thirteenth century, with senses covering a day and a stretch of time. English borrowed it in the early fourteenth century.
The earliest English uses still sit close to duration: a period, a season, an age. By the middle of that century the word also marked the moment when something happened or would happen. Late in the century it specialized further as the clause or heading that tells when a writing was made. The path is borrowing, not native Germanic inheritance. Old English had other ways to talk about days and times; it did not pass this particular noun down.
From given to the calendar line
Latin datus, given, is the past participle of dare. The deeper reconstruction is the Proto-Indo-European root for give, often cited as *do- or *deh₃-. That root is crowded with descendants that English speakers meet in other loans: data itself, the neuter plural meaning things given; donation; donor; dative; and, more loosely, dose. Outside Latin, related verbs include Greek didonai, Sanskrit dadati, Lithuanian duoti, and the Slavic family of dati. Those are cognates of the Latin verb, not a direct chain into the English calendar noun.
Morphology inside English is simple. Date is not a prefix plus a native stem. The French and Latin history is the whole story of the form. What changed was the meaning of a bureaucratic participle: given became the label for when the giving was recorded.
German Datum, Dutch datum, Italian data, and French date keep the same Latin inheritance. Spanish fecha is a useful contrast. It comes from a different Latin past participle, facta, things done, so it is a cousin in function, not a twin in form.
How the senses multiplied
Once English had a noun for a stated time, verbs followed. Around 1400, to date a document meant to mark it with that line, and to date an event meant to assign it a place in time. Much later, in the nineteenth century, the same verb could mark something as belonging to an earlier fashion: a book or a photograph dates itself by outdated details. The phrase out of date, no longer in vogue, is older, from about 1600.
The social sense is a late American development from the appointment meaning of the time-word, not a new borrowing. By 1885 date could mean a meeting fixed for a particular time. Romance attached itself in the 1890s. By 1900 the word could name the person one met. The intransitive verb for going out together is recorded from the first years of the twentieth century. None of that history belongs to the fruit.
The other date
The fruit arrived at almost the same moment, around 1300, from Old French date. Behind French stands Old Provençal datil, Latin dactylus, and Greek daktylos. That Greek word first meant finger or toe. Writers have long explained the fruit name by shape: the ripe date looks like a digit. Others have pointed at the palm’s leaves and the palm of a hand. A third account treats Greek daktylos in this botanical sense as a reshaping of a Semitic name for the tree — Hebrew deqel, Aramaic diqla, Arabic daqal for the date palm — pulled toward the familiar Greek word for finger. The sources do not settle that last point; it remains a plausible contact explanation, not a proven chain.
English already had a native compound, fingeræppel, finger-apple, which this loan replaced. Related modern words keep more of the Latin and Greek shape: French datte, German Dattel, Dutch dadel, Italian dattero, Spanish dátil. English dactyl, the metrical foot named for a long syllable plus two shorts, like a finger’s joints, is a learned doublet of the same Greek word.
What the chancery left behind
The calendar noun is a piece of office Latin that escaped into ordinary speech. A participle that once meant given, written at the foot of a letter, became the everyday name for a day on the civil calendar, then for any appointment, and only in the last century and a half for a romantic one. The fruit sitting in the same spelling is a separate Mediterranean loan. If a single fact is worth keeping, it is that data and date, in the time sense, are grammatical twins: neuter plural things given, and a feminine given that came to mean when.