DICT.TW Dictionary Taiwan

 Tea·spoon·ful n.; pl. Teaspoonfuls or Teaspoonsful. As much as teaspoon will hold; enough to fill a teaspoon.  In cooking, it is usually estimated as 4.9 milliliters, which is ⅙ of a fluid ounce, or ⅓ of a tablespoonful.  In cooking recipes it may be abbreviated as t.
 Note: In the 1890 dictionary, it was defined as a fluid dram or one quarter of a tablespoonful.
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