Index of English words, starting with "ob"

(1) - Observation (n.) The information so acquired.
(2) - Observation (n.) Specifically, the act of measuring, with suitable instruments, some magnitude, as the time of an occultation, with a clock; the right ascension of a star, with a transit instrument and clock; the sun's altitude, or the distance of the moon from a star, with a sextant; the temperature, with a thermometer, etc.
(3) - Observation (n.) The act of recognizing and noting some fact or occurrence in nature, as an aurora, a corona, or the structure of an animal.
(4) - Observation (n.) Performance of what is prescribed; adherence in practice; observance.
(5) - Observation (n.) Hence: An expression of an opinion or judgment upon what one has observed; a remark.
(6) - Observation (n.) The result of an act, or of acts, of observing; view; reflection; conclusion; judgment.
(7) - Observation (n.) The act or the faculty of observing or taking notice; the act of seeing, or of fixing the mind upon, anything.

(1) - Observational (a.) Of a pertaining to observation; consisting of, or containing, observations.

(1) - Observatory (n.) A lookout on a flank of a battery whence an officer can note the range and effect of the fire.
(2) - Observatory (n.) A place, as an elevated chamber, from which a view may be observed or commanded.
(3) - Observatory (n.) A building fitted with instruments for making systematic observations of any particular class or series of natural phenomena.
(4) - Observatory (n.) A place or building for making observations on the heavenly bodies.

(1) - Observe (v. i.) To make a remark; to comment; -- generally with on or upon.
(2) - Observe (v. i.) To take notice; to give attention to what one sees or hears; to attend.
(3) - Observe (v. t.) To express as what has been noticed; to utter as a remark; to say in a casual or incidental way; to remark.
(4) - Observe (v. t.) To be on the watch respecting; to pay attention to; to notice with care; to see; to perceive; to discover; as, to observe an eclipse; to observe the color or fashion of a dress; to observe the movements of an army.
(5) - Observe (v. t.) To take notice of by appropriate conduct; to conform one's action or practice to; to keep; to heed; to obey; to comply with; as, to observe rules or commands; to observe civility.

(1) - Observer (n.) A sycophantic follower.
(2) - Observer (n.) One who fulfills or performs; as, an observer of his promises.
(3) - Observer (n.) One who keeps any law, custom, regulation, rite, etc.; one who conforms to anything in practice.
(4) - Observer (n.) One who observes, or pays attention to, anything; especially, one engaged in, or trained to habits of, close and exact observation; as, an astronomical observer.