Usage pattern:
[river] delta
The Nile Delta is one of the most fertile regions in Egypt.
A Nílus deltája Egyiptom egyik legtermékenyebb vidéke.
Sediment builds up over time to form a delta at the river's mouth.
Az üledék idővel felhalmozódik, és deltatorkolatot alakít ki a folyó torkolatánál.
Many species of birds nest in the river delta.
Learner examples
The Nile Delta is in Egypt.
A Nílus deltája Egyiptomban van.
A delta is at the end of a river.
A delta a folyó torkolatánál van.
Common mistake:
Learners sometimes confuse 'delta' with 'estuary'; an estuary is not always land-building like a delta.
Meaning
Landform at river mouth
Collocations
river delta
|Nile Delta
|Mississippi Delta
|fertile delta
Synonyms
estuary (An estuary is where a river meets the sea, often mixing salt and fresh water; not always triangular like a delta.)
Themes
geography
|nature
|travel
Definition
Land at the end of a river where it spreads out before meeting the sea or a lake.
A low, flat area of land where a river splits into several smaller channels before flowing into the sea or another body of water, often shaped like a triangle.
In mathematics, lowercase delta often represents a small change in a variable.
A matematikában a kis delta gyakran egy változó kismértékű változását jelöli.
The symbol Δx means 'change in x'.
A Δx jelölés azt jelenti: „x változása”.
Delta is the fourth letter of the Greek alphabet.
Learner examples
Delta is a letter in Greek.
A delta egy betű a görög ábécében.
In math, delta means change.
A matematikában a delta változást jelent.
ΔT means change in temperature.
Common mistake:
Learners may confuse the letter delta with the geographic term for a river mouth.
Meaning
Fourth Greek alphabet letter
Collocations
uppercase Delta
|lowercase delta
|delta symbol
Themes
language
|science
|education
|core_vocabulary
Definition
The fourth letter in the Greek alphabet, often used in math and science to mean change.
The fourth letter of the Greek alphabet (Δ, δ), used in science, mathematics, and engineering to represent change or difference.
The delta between the two measurements was significant.
A két mérés közötti különbség jelentős volt.
We need to calculate the temperature delta over the day.
Ki kell számolnunk a nap folyamán bekövetkezett hőmérséklet-változást.
Stock analysts look at the delta in prices over time.
Learner examples
There is a big delta between the two scores.
Nagy különbség van a két pontszám között.
We check the delta in price each day.
Naponta ellenőrizzük az árváltozást.
The delta shows how much it changed.
Meaning
Difference between two values
Collocations
delta value
|delta change
|positive delta
Synonyms
difference (More general term for any kind of change or variation; 'delta' is more technical.)
Themes
science
|mathematics
|technology
|education
Definition
A word or sign that shows the difference between two numbers or amounts.
A symbol or term used especially in mathematics and science to indicate a difference or change between two quantities.
The option has a delta of 0.5, meaning it will move half as much as the stock price.
Az opció deltája 0,5, ami azt jelenti, hogy az opció ára feleakkora mértékben változik, mint a részvény árfolyama.
Traders adjust their positions to remain delta neutral.
A kereskedők úgy módosítják a pozícióikat, hogy delta-semlegesek maradjanak.
A higher delta means greater sensitivity to price changes.
Learner examples
The option has a high delta.
Az opciónak magas a deltája.
Delta tells how much the option moves with the stock.
A delta megmutatja, mennyire mozog együtt az opció ára a részvény árfolyamával.
We want to keep our portfolio's delta near zero.
Meaning
Options price sensitivity measure
Collocations
option delta
|hedge delta
|positive delta
Definition
In finance, a number that shows how much an option's price will change if the price of its stock changes by one point.
In finance, a measure of how much the price of an option changes when the price of the underlying asset changes by one unit.
