400th
         adj 1: the ordinal number of four hundred in counting order
                  [syn: {four-hundredth}, {400th}]

English Dictionary: 49th	by the DICT Development Group
From WordNet (r) 3.0 (2006) [wn]:
40th adj the ordinal number of forty in counting order [syn: fortieth, 40th]
From WordNet (r) 3.0 (2006) [wn]:
44th adj the ordinal number of forty-four in counting order [syn: forty-fourth, 44th]
From WordNet (r) 3.0 (2006) [wn]:
45th adj the ordinal number of forty-five in counting order [syn: forty-fifth, 45th]
From WordNet (r) 3.0 (2006) [wn]:
46th adj the ordinal number of forty-six in counting order [syn: forty-sixth, 46th]
From WordNet (r) 3.0 (2006) [wn]:
47th adj the ordinal number of forty-seven in counting order [syn: forty-seventh, 47th]
From WordNet (r) 3.0 (2006) [wn]:
48th adj the ordinal number of forty-eight in counting order [syn: forty-eighth, 48th]
From WordNet (r) 3.0 (2006) [wn]:
49th adj the ordinal number of forty-nine in counting order [syn: forty-ninth, 49th]
From WordNet (r) 3.0 (2006) [wn]:
4th adj coming next after the third and just before the fifth in position or time or degree or magnitude; "the quaternary period of geologic time extends from the end of the tertiary period to the present" Synonym(s): fourth, 4th, quaternary
From WordNet (r) 3.0 (2006) [wn]:
4to n the size of a book whose pages are made by folding a sheet of paper twice to form four leaves Synonym(s): quarto, 4to