Englishfor English speakers
tend
Verb
—
If something tends to be true, it is often or usually true.
The streets are very confusing in Tokyo and people tend to get lost.
A clearly typed paper does tend to get a better mark.
If we can't understand something, we tend to ignore it.
Of course, millions of dollars in targeted advertising does tend to increase sales.
—
If you tend something, you watch and take care of it.
The children often help with chores, including cutting the grass and tending the garden.
—
If mathx/math tends towards mathy/math, mathx/math is usually mathy/math.
My artwork tends towards the modern.
—
If you tend bar, you work at a bar selling drinks.
—
If something tends in a particular direction, you generally moves in that direction.
The price of gold has tended upward for about three years.
operation
Noun
—
An operation is a medical process, often opening the human body.
The doctors performed the operation in three hours.
—
An operation is an action of a group of people working for a goal (often military).
The Army operation was a success.
—
An operation is part or all of a business. small(often plural)/small
The company's East Coast operation was bigger than its West Coast operation.
—
An operation is a symbol that is used to perform a specific operation (addition, subtraction, multiplication or division) in maths.
The plus symbol is used to perform a specific operation in maths which is addition.