1.   He invited the two of them to his flat for tea or dinner, a practically unheard of thing.

2.   Both are practically unheard of in the food service industry.

3.   But mostly the men recalled how the show broke new ground at a time when integration was practically unheard of.

4.   Divorce was practically unheard of.

5.   Even though almost any red grape can be used for roses, merlot roses had been practically unheard of.

6.   Foot traffic was practically unheard of on Palm Canyon Drive until the community lifted a longstanding ban on bright street lighting.

7.   For years, battering and child abuse were practically unheard of among American Indians in the Hopi tribe.

8.   In an era of expansion, where depth is not only a rarity but practically unheard of, Boston seems in decent shape.

9.   In the U.S., companies buy up some of their shares to lift their stock price, but the practice has been practically unheard of in Japan.

10.   It was practically unheard of at that time to pay a minor-leaguer that kind of money, but it made sense to the Cardinals.