Antonym: beneath, off. Similar words: in, of, oh, ok, one, or, own, son. Meaning: [ɑ /ɒn ,ən] 
adj. 1. in operation or operational 2. (of events) planned or scheduled. adv. 1. with a forward motion 2. indicates continuity or persistence or concentration 3. in a state required for something to function or be effective.
adj. 1. in operation or operational 2. (of events) planned or scheduled. adv. 1. with a forward motion 2. indicates continuity or persistence or concentration 3. in a state required for something to function or be effective. 
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241. Can u point to where I am on this map?
242. Most Muslims try to make a pilgrimage/go on a pilgrimage to Mecca at least once in their life.
243. Sloping walls on the bulk of the building create an optical illusion.
244. There is a stare look on with a disregard called called silent care.
245. Famous mainly for his wonderful voice, Cole was also a virtuoso on the piano.
246. A police put some chemicals on the piece of paper and a line of words showed up.
247. Lose yourself on a journey of epic proportions. Wherever you go,[http://sentencedict.com/on.html] no one will ever know.
248. The car turned on the wet road and slipped into the fence.
249. We'll update you on this news story throughout the day.
250. The audience was / were enthusiastic on the opening night of the play.
251. In the harbour, the boats bobbed gently up and down on the water.
252. Affectionate birthday greetings.Birthday means a new beginning and a new chance to take hold on life.
253. Skull and crossbones stickers on the drums aroused the suspicion of the customs officers.
254. It is traditional not to eat meat on Good Friday.
255. The doctor was able to treat the disease although he could not lay his finger on the exact cause.
256. He is ready to do anything on earth to better his fortunes.
257. He's got that bit of adolescent fuzz on his upper lip.
258. The plan had to be abandoned on grounds of cost.
259. She can look back on her career with great satisfaction.
260. Wash your hands so you don't get germs on the food.
261. As a footnote, I should add that there was one point on which his bravado was more than justified.
262. The secret of change is to focus all of your energy, not on fighting the old, but on building the new.
263. I know where I stand on this issue - I'm against the war.
264. I sat on the shore and looked at the sea.
265. He spent important money on a small jewel for his wife.
266. Do you need advice on your entitlement to state benefits?
267. The greatest test of courage on earth is to bear defeat without losing heart.
268. As you approach the town, you'll see the college on the left.
269. The cat sat in the tree ready to pounce on the ducks below.
270. Will it bother you if I turn the television on?