anatropous ovule: a completely inverted ovule turned back 180 degrees on its stalk
ovule: a small body that contains the female germ cell of a plant; develops into a seed after fertilization
metoprolol: beta blocker (trade name Lopressor) used in treating hypertension and angina and arrhythmia and acute myocardial infarction; has adverse side effects (depression and exacerbation of congestive heart failure etc.)