There are three commonly used types of abbreviations in the English language: Abbreviations, contractions and acronyms.
Abbreviations
These are formed by omitting letters from the end of a word:
- Medical Sciences ⇒ Med Sci
- Doctorate of Philosophy ⇒ DPhil
- ante meridiem ⇒ am
- post meridiem ⇒ pm
Don’t use full stops after any abbreviations.
Contractions
These are formed by omitting letters from the middle of a word:
- Mister ⇒ Mr
- Doctor ⇒ Dr
- The Reverend ⇒ The Revd
- Saint ⇒ St
Acronyms
These are formed from the initial letters of words (whether the result is pronounceable as a word or as a series of letters):
- British Broadcasting Corporation ⇒ BBC
- Master of Arts ⇒ MA
- Acquired Immune Deficiency Syndrome ⇒ AIDS
- Mathematical, Physical and Life Sciences ⇒ MPLS
- Planning and Resource Allocation Committee ⇒ PRAC
- Pro-Vice-Chancellor ⇒ PVC
When using an acronym that may be unfamiliar, spell it out in full the first time it is mentioned, with the acronym following in brackets; thereafter, use the acronym alone:
- The decision was made by the Planning and Resource Allocation Committee (PRAC). There are several meetings of PRAC every term.
Street
- Saint Ebbe’s Street ⇒ St Ebbe’s St
Linear measures
- 1 inch (in) = 2,54 cm
- 1 foot (ft) = 12 inches = 30,48 cm
- 1 yard (yd) = 3 feet = 91,44 cm
- 1 furlong (fur) = 220 yards = 201,17 m
- 1 mile (m) = 1760 yards = 1.609 km
- 1 league = 3 miles = 4,828 km
Nautical measures
- 1 fathom = 6 feet = 1,829 m
- 1 cable = 608 feet = 185,31 m
- 1 nautical, sea mile = 10 cables = 1,852 km
- 1 sea league = 3 nautical miles = 5,550 km
Liquid measures of capacity
British
- 1 gill = 0,142 l
- 1 pint (pt) = 4 gills = 0,568 l
- 1 quart (qt) = 2 pints = 1,136 l
- 1 gallon (gal) = 4 quarts = 4,564 l
- 1 barrel = 35 gallons = 159,106 l
- 1 barrel = 36 gallons (Bier) = 163,656 l
American
- 1 gill = 0,118 l
- 1 pint = 4 gills = 0,473 l
- 1 quart = 2 pints = 0,946 l
- 1 gallon = 4 quarts = 3,785 l
- 1 barrel = 42 gallons = 159,106 l
Temperature conversion
Fahrenheit > Celsius (subtract 32 and multiply by 5/9)
- 0 °F = -17,8 °C
- 50 °F = 10 °C
- 100 °F = 37,7 °C
- 200 °F = 93,3 °C
Celsius > Fahrenheit (multiply by 9/5 and add 32)
- 0 °C = 32 °F
- 30 °C = 86 °F
- 50 °C = 122 °F
- 100 °C = 212 °F
Avoirdupois weights
- 1 grain (gr) = 0,065 g
- 1 dram (dr) = 27,3438 grains = 1,772 g
- 1 ounce (oz) = 16 drams = 28,35 g
- 1 pound (lb) = 16 ounces = 453,59 g
- 1 stone = 14 pounds = 6,348 kg
- 1 quarter = 28 pounds = 12,701 kg
- 1 hundredweight (cwt) = 112 pounds (Brit) = 50,8 kg = 100 pounds (US) = 45,36 kg
- 1 ton = 20 cwt (Brit) = 1016 kg = 2000 pounds (US) = 907,185 kg
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