4. Take steps to regulate your period. If your period is irregular and you have seen your doctor to determine that there are no major problems, you can take certain measures to help your period become more regular.
aptitude (plural aptitudes) 1  Natural ability to acquire knowledge or skill. 2  The condition of being suitable.
Spatial Aptitude Test. A spatial aptitude test measures your ability to manipulate shapes in two dimensions or to visualize three-dimensional objects presented as two-dimensional pictures.