11 letters · 16 points in Scrabble
noun the act of making and recording a measurement
noun the act of observing; taking a patient look
noun a remark expressing careful consideration
originFrom Middle English observacion, borrowed from Middle French observacion. Also a borrowing from French observation and a learned borrowing from Latin observātiō(n-). Morphologically observe + -ation.
Etymology from Wiktionary, CC BY-SA 3.0