stick to correctly or closely, discover or determine the existence, presence, or fact of, observe with care or pay close attention to, transitive To take notice of by appropriate conduct; to conform one's action or practice to; to keep; to heed; to obey; to comply with, To be on the watch respecting; to pay attention to; to notice with care; to see; to perceive; to notice; to discover, To express as what has been noticed; to utter as a remark; to say in a casual or incidental way; to remark, intransitive To maintain (silence or a period of silence), as out of respect for someone who has died, To say casually; remark, To watch attentively.

discovered or determined by scientific observation, Perceived directly with the eyes; observed at first hand, Detected by systematic scientific observation, verb_ Simple past tense and past participle of observe

One who is sent to observe and report on events or proceedings without directly participating in them, One who observes or takes notice; a spectator or looker-on_ as, a keen observer, One who observes, or pays attention to, anything; especially, one engaged in, or trained to habits of, close and exact observation

receive a specified treatment (abstract), be valid, applicable, or true, come into possession of, transitive To get hold of by effort; to gain possession of; to procure; to acquire, in any way, obsolete To hold; to keep; to possess, intransitive To be in existence, in effect, or customary, To succeed in gaining possession of as the result of planning or endeavor; acquire, To gain or have a firm footing; to be recognized or established; to become prevalent or general; to prevail

Simple past tense and past participle of obtain

Present participle of obtain

easily perceived by the senses or grasped by the mind, Easily discovered, seen, or understood; self-explanatory, Easily seen through because of a lack of subtlety; transparent

In a obvious manner; clearly apparent, unmistakably (`plain' is often used informally for `plainly')

An abbreviation of ocean, A Middle English form of oak

reason, an opportunity to do something, the time of a particular event, verb_ give occasion to, transitive verb_ To provide occasion for; cause