All Things Twelve

Plato chose twelve for establishing weights and measures, and coinage. In his ideal state it represented the enveloping universe. Twelve may have lost out with coinage and weights, but with it so intimately bound to our measurement of time it certainly continues to represent the enveloping universe.
Words for 12
Cardinal: TWELVE
Hindu-Arabic: 12
Ordinate: Twelveth
Roman: XII
Basic Math: 2x6, 3x4
Roman word duodecim, duodecimus

Greek words of Twelve: dodecca
From Anglo-Saxon: 'Twelf', meaning two left over

Time and Holiday Associations:
December is 12th monthTwelve Days of Christmas Jan 5th (or 6th) is Twelfth Night
Time, Science, Technological, & measurement:
12 months to a yearTwo twelve hour rotations to each day. 12 inches in a foot Magnesium Mg 12, periodic table12 months in a Year, dozen, 12 inches = 1 foot, Two fathoms = 12 feetFirst abundant number (divisors  sum is greater than the number) the sum of 12's factors is 16 (1+2+3+4+6), which is also a square number (4). 12 cranial nerves12 pairs of ribs12 notes in chromatic scale12 banks in the Federal Reserve system
Religious Associations:
Twelve Disciples (Apostles) of Christ: "The first foundation was jasper, the second sapphire, the third chalcedony, the fourth emerald, the fifth sardonyx, the sixth carnelian, the seventh chrysolite, the eighth beryl, the ninth topaz, the tenth chrysoprase, the eleventh jacinth, and the twelfth amethyst." Rev. 21:12Twelve tribes of IsraelTwelve Angels of Paradise
Twelve Associations:
12 Apostles12 Days of Christmas12 signs of zodiac12 Virtues (love, wisdom, truth, justice, peace, equilibrium, humility, strength, faith, joy and victory)12 princes of Ishmael12 apostles of Osiris12 sons of Jacob12 Gods of Olympus12 labors of Hercules12 members on a jury
Games, sports:
Queen card in deck of cards2 dice have 12 sides – highest sum in diceDice boxcars = 12, 2 dice both showing 6 up.Checkers has 12 pieces on a side.
Prophetic references: Twelve is the number of fruition in the manifested universe and a ending to established order leading to reincarnation.

Astrological Association: · House of Pisces. Persons born from February 19 to March 20.

Tarot Divination: The hanged man is card twelve and an upright card means wisdom and prophetic power in spiritual matters, or a pause in one's life where decisions are temporarily suspended. It is good to remember self surrender leads to the transformation of the personality where material temptations conquered. A reversed card indicates arrogance, paying more attention to the physical appearance while ignoring spiritual matters, possibly a false prophecy and a general waste of effort.

Literature, Folklore & art:
Twelfth Night - play by William ShakespeareTwelve Days of Christmas (song)Twelve Dancing Princesses (folktale) Twelve Foundations of AristotleCheaper By the Dozen, book by Frank Bunker Gilbreth, made into 2 movies.Many novels and music named either 12 or TwelveDirty Dozen - movieTwelve Years a Slave - movie 12 Monkeys - movieCommon usage:
Cheaper by the dozenTwelve Pack