What Is Myasthenia Gravis? Myasthenia gravis is a chronic condition that causes muscles to tire and weaken easily. For example, if you have myasthenia gravis, you may notice that during a meal, your jaw muscles become tired and weak, interfering with your ability to chew food.
Scorpio is the symbol of sex and Scorpios are passionate lovers, the most sensually energetic of all the signs. For them, union with the beloved is a sacrament, an outward and visible sign of an inward and spiritual grace..
(astrology) Also called the Scorpion. 1  the eighth sign of the zodiac, symbol â, having a fixed water classification and ruled by the planet Mars and the dwarf planet Pluto.  a person born during a period when the sun is in this sign.