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The IUPAC nomenclature of organic chemistry, for example, uses the numerical prefixes derived from Greek, except for the prefix for 9 (as mentioned) and the prefixes from 1 to 4 (meth-, eth-, prop-, and but-), which are not derived from words for numbers. These prefixes were invented by the IUPAC, deriving them from the pre-existing names for ...
A three digit code starting with 07 indicates that the number is for a mobile phone. All national numbers start with one leading 0, and international destinations are specified by the prefix 00 or +. The numbers are written with the area code followed by a hyphen, and then two to three groups of digits separated by spaces. [8]
for prefixes and suffixes, such as "mid-Atlantic" and "shell-like", when prefixing a capitalized word, such as "un-Christian", to avoid double vowels, such as "semi-independent" when writing out fractions like "one-third" or "three-fifths" The hyphen is entered by the hyphen or minus key on all standard keyboards.
Hyphenate all numbers under 100 that need more than one word. For example, $73 is written as “seventy-three,” and the words for $43.50 are “Forty-three and 50/100.”
There is some confusion over whether these prefixes should be hyphenated and/or in upper case. In the case of e-mail, it was originally hyphenated and lowercase in general usage, but the hyphen is no longer common. [9] In 1999, Michael Quinion attributed the forms "email", "E-mail" and "Email" to uncertainty on the parts of newer Internet users ...
The hyphen ‐ is a punctuation mark used to join words and to separate syllables of a single word. The use of hyphens is called hyphenation. [1]The hyphen is sometimes confused with dashes (en dash –, em dash — and others), which are wider, or with the minus sign −, which is also wider and usually drawn a little higher to match the crossbar in the plus sign +.
A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme.
9.9.2.3 Instead of a hyphen, use an en dash when applying a prefix or suffix to a compound that itself includes a space, dash or hyphen 9.9.2.4 To separate parts of an item in a list 9.9.3 Other uses for en dashes