It was first nourished by dropping liquid food into its mouth; and at the age of fifteen months it was healthy and weighed 18 pounds.
Indeed, the proportions of "General Tom Thumb" were those of an ordinary infant of from thirteen to fifteen months old.
There is quoted from Boston a the report of a boy of fifteen months weighing 92 pounds who died at Coney Island.
The plant on which it was produced was little more than fifteen months old.
Some writers, following the laws of nature, as they interpreted them, fixed the period of weaning at fifteen months, when the infant has got its eight incisors and four canine teeth.
Out of the corner of my eye I saw a white loaf on the shelf, the first in fifteen months.
That was the most humane act experienced from German hands during my fifteen months' sojourn in Germany.
Although some physicians recommend that the sleep during the day be discontinued after the infant has attained the age of fifteen months, the wisdom of such advice may well be doubted.
On attaining the age of twelve or fifteen months, infants are usually able to digest ordinary wholesome solid food, neatly and well cooked, when mashed or cut into fine pieces.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "fifteen months" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.