octothorpe

Spelling & Dictionary Insight

The English entry for octothorpe is 10 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /ˈɒktəʊθɔːp/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader.The dominant gloss from Wiktionary reads: "The hash or square symbol #, used mainly in telephony and computing.".

No misspelling variants are generated for octothorpe in our index, suggesting the orthography follows predictable English patterns.It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: Origin disputed. There is no known usage before it was adopted by Bell Labs in the late 1960s or early 1970s, so most sources agree it was coined by someone at Bell Labs, but accounts from Bell Labs personnel conflict on the details. The derivation as a tra… Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is octothorpe, spelled O-C-T-O-T-H-O-R-P-E, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.