Note: If you are using PowerPoint, you can still save the original version of an edited picture, even if you have made corrections. This feature is not available in Word or Excel. In Office 2010, you can change the brightness, contrast, or sharpness of a picture by using the Corrections tools.
1. of or relating to an interstice or interstices. 2. (Chemistry) physics forming or occurring in an interstice: an interstitial atom. 3. (Chemistry) chem containing interstitial atoms or ions: an interstitial compound. 4. (Biology) anatomy zoology occurring in the spaces between organs, tissues, etc: interstitial cells.
Relating to spaces or interstices in any structure. adj pertaining to the tiny spaces between tissues. pertaining to or situated between parts or in the interspaces of a tissue. atypical interstitial pneumonia. see atypical interstitial pneumonia.