Terms whose meanings contain the concept of whole positive number, also called natural number:

One, two, several, many:

Number Greek-based
prefix
C D E
one mono- monad monadic monogon
two di- dyad dyadic digon
three tri- triad triadic trigon
four tetra- tetrad tetradic tetragon
five penta- pentad pentadic pentagon
six hexa- hexad hexadic hexagon
seven hepta- heptad heptadic heptagon
eight octa- octad octagon
nine nona- nonad nonagon
ten deca- decad decagon
eleven undeca-
twelve dodeca- dodecagon
fifteen quindeca- quindecagon
Number Latin-based
prefix
C D E
one - solo
two - duo double doublet
three - trio triple triplet
four - quartet quadruple quadruplet
five quin- quintet quintuple quintuplet
six sex- sextet sextuple sextuplet
seven - septet septuple septuplet
eight - octet octuple octuplet
nine - nonet
ten -
eleven -
twelve -

Combined in names of:

  • polygon
  • polyhedron

First, second, third, etc.:

  • first
  • second
  • third
  • fourth
  • fifth
  • sixth
  • seventh
  • eighth

Onefold, twofold, threefold, etc.:

Unary, binary, ternary, etc; also used for arity of predicates and functions:

Arity of a predicate (also in the table above):

Primary, secondary, etc:[verify]

Numeral system:

  • unary (1)
  • binary (2)
  • quaternary (4)
  • quinary (5)
  • senary (6)
  • septenary (7)
  • octal (8)
  • nonary (9)
  • decimal (10)
  • duodecimal (12)
  • tetradecima (14)
  • pentadecimal (15)
  • hexadecimal (16)
  • octadecimal (18)
  • vigesimal (20)
  • hexavigesimal (26)
  • sexadecimal (60)

Dichotomy, trichotomy:

Monarchy, diarchy:

Triumvirate, quadrumvirate:

Vicenarian, tricenarian, etc:

  • vicenarian (20)
  • tricenarian (30)
  • quadragenarian
  • quinquagenarian
  • sexagenarian
  • septuagenarian
  • octogenarian
  • nonagenarian
  • centenarian

Dilogy, trilogy (series of books or films):

  • dilogy (2)
  • trilogy (3)
  • tetralogy (4)
  • pentalogy (5)
  • hexalogy (6)
  • heptalogy (7)
  • octology (8)
  • ennealogy (9)
  • decalogy (10)
  • polylogy (2+)

-gram:

Athletic compound activity:

Athlete:

Pentameter, hexameter, etc. (poetry):

Pentatonic, hexatonic (music):

Pentomino, hexomino (see polyomino):

Number of atoms:

-chord:

-pod, number of legs or feet:

Monologue, dialogue:

Monism, dualist

Monopoly, etc.

Biped, quadruped

Quadrumana

Wheeled

  • one-wheeled
  • two-wheeled
  • three-wheeled
  • four-wheeled
  • five-wheeled
  • six-wheeled
  • seven-wheeled
  • eight-wheeled
  • nine-wheeled
  • ten-wheeled
  • eleven-wheeled
  • twelve-wheeled
  • thirteen-wheeled
  • fourteen-wheeled
  • fifteen-wheeled
  • sixteen-wheeled
  • eighteen-wheeled
  • twenty-wheeled
  • twenty-one-wheeled
  • twenty-two-wheeled
  • twenty-three-wheeled
  • twenty-four-wheeled
  • twenty-five-wheeled

Number of synapses:

  • monosynaptic (1)
  • disynaptic (2)
  • trisynaptic (3)
  • polysynaptic (*)

See also edit