Near; not far from; -- determining approximately time, size, quantity.
Nearly; approximately; with close correspondence, in quality, manner, degree, etc.; as, about as cold; about as high; -- also of quantity, number, time.
"About", "Approx.", and "Circa" are terms which when used in a letter of credit, are construed to allow a difference not to exceed 10% more or 10% less than the monetary amount, or the quantity, or the unit price stipulated in the letter of credit.