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What pageda said.
Likely the ring gear teeth on the flywheel (or auto trans flexplate) are worn at one or two spots 180 degrees apart. A 4-cyl engine tends to come to rest when switched off, at those places in the crankshaft rotation, due to the crank arrangement of a cylinder coming up on the compression stroke every 180 degrees. Thus, the starter pinion gear contacts the ring gear at those spots nearly every start, and they wear.
If you have a manual trans car, before attempting to start, place it in 4th gear, e-brake off, clutch engaged, and nudge the vehicle back or forward an inch or two. Then try to start and I'll bet my mortgage it will crank over with no noise. What has happened is that you have rotated the engine a little and now present unworn ring gear teeth to the starter. Auto trans car? You're hooped. New ring gear is the only fix. ($$$)
My son's 1981 240 with manual had this problem - and the solution. At his high school parking lot he would casually - hoping to go unnoticed - nudge the car in top gear to avoid the embarrassing screech of the starter not quite engaging the ring gear. We installed a rebuilt starter, but that only slightly and temporarily improved things.
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Bob: Son's XC70, my 83 244DL, 89 745 (Chev LT-1 V8), 98 S90 (recently sold) and 2010 XC60. Also '77 MGB and four old motorcycles
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