D e s p a c i t o m e a n i n g. Ds or Ds also ds or Ds. Without sufficient vitamin D bones can become.
Noun plural Ds or Ds ds or ds. The fourth in a series. Usually expressed as italic d D.
Ds or Ds also ds or Ds.
Something shaped like the letter D. Vitamin D promotes calcium absorption in the gut and maintains adequate serum calcium and phosphate concentrations to enable normal bone mineralization and to prevent hypocalcemic tetany involuntary contraction of muscles leading to cramps and spasms. Noun plural Ds or Ds ds or ds. D Sub-Shell third outer subshell of an electron shell D.