Definition of "observe" []

• To be or become aware of, especially through careful and directed attention; notice. (verb-transitive)
• To watch attentively: observe a child's behavior. (verb-transitive)
• To make a systematic or scientific observation of: observe the orbit of the moon. (verb-transitive)
• To say casually; remark. (verb-transitive)
• To adhere to or abide by: observe the terms of a contract. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "You are now on the second speed, which you will no doubt observe is considerably faster than the lower speed … Remember that with a motor-car the driver controls the vehicle, and in this it differs from a horse-drawn vehicle, in which the driver is often at the mercy of the animal, to be pulled here, backed there, or upset altogether, should this chance to please the noble quadruped."
• "I wonder if the case might be that the sectors that are dominated by computer technology have finally emerged as the leading producers of output, i.e., what we observe is a measurement shift."
• "If that happens, what we will observe is a change in the quantities used for the two sources of energy."