upper

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upper

1. Geology archaeol denoting the late part or division of a period, system, formation, etc.
2. Maths (of a limit or bound) greater than or equal to one or more numbers or variables
3. Informal any tooth of the upper jaw
4. Slang any of various drugs having a stimulant or euphoric effect

upper

[′əp·ər]
(geology)
Pertaining to rocks or strata that normally overlie those of earlier formations of the same subdivision of rocks.
References in periodicals archive ?
WORK at this time helps you gain the upper hand with someone, who last month was unwilling to give you a break.
The 3-1 jolly was looking good to collect but Seb Sanders endured a bumpy passage which allowed apprentice Eaves to gain the upper hand on the 8-1 winner.
The battle to gain the upper hand on polio in the developing countries continues, but it may not be long until the people of India, Pakistan and Nigeria, where 98 percent of polio cases occur now, will live in a world free of the crippling disease.
But instead of City growing in confidence it was the unsung Polish side who started to gain the upper hand.
Basically, the first few decades of the seventeenth century saw the gradual death of the golden age of Jewish cultural contributions, a time when the Catholic church was finally able to gain the upper hand in the matter of subjugating areas of Jewish influence.
Both sides battled to gain the upper hand in the second-half.
Each gender tries to gain the upper hand, scientists believe, by evolving new structures to grab or fend off the other.
I'm not daft enough to think we could have got 370 in the fourth innings - that was purely for the romantics - but by retreating into a self-imposed shell we invited Pakistan to gain the upper hand.
In the final set, the world No.11 finally found his service touch and produced a succession of passing shots to gain the upper hand.