How to Spell observation

Middle English {it}observacioun{/it} "performance (of a religious rite), heeding (of rules, practices)," borrowed from Middle French & Latin; Middle French {it}observacion{/it} "act of observing, performance of a prescribed rule," going back to Old French {it}observation{/it} "law observed," borrowed from Latin {it}observātiōn-, observātiō{/it} "action of watching, adherence (to rules, practices), usage, practice," from {it}observāre{/it} "to give attention, watch carefully, abide by" + {it}-tiōn-, -tiō,{/it} suffix of verbal action {ma}{mat|observe|}{/ma}