A birth defect in which the backbone and spinal canal do not close before birth; a type of spina bifida. The spinal cord and the meninges protrude. What is spina bifida. A developmental birth defect caused by the incomplete closure of the embryonic neural tube.
Sententia (sen-TEN-chee-uh): Figure of argument in which a wise, witty, or pithy maxim or aphorism is used to sum up the preceding material. Examples We are now well into our fifth year since a policy was initiated with the avowed object and confident purpose of putting an end to slavery agitation. However, under the operation of that policy, that agitation has not only not ceased, but has constantly augmented.
sentry (plural sentries) 1  A guard, particularly on duty at the entrance to a military base. ( 2 uncountable) Sentry duty; time spent being a sentry. ( 3 nautical) A form of drag to be towed underwater, which on striking bottom is upset and rises to the surface.