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Dictionary.com

ออกเสียง Lightening = ‘LAHYT-n-ing’

ออกเสียง lightning =  ‘LAHYT-ning’

 

NECTEC’s Lexitron-2 Dictionary

ให้คำแปล Lighten = VT. ทำให้สว่าง เบาลง VI. เบาลง สว่างขึ้น

ให้คำแปล lightning = N. ฟ้าแลบ 

ไม่มีคำแปล สำหรับ lightening

 

Dictionary of Problem Words and Expression

Lightening & Lightning

Lightening means 

“making lighter in weight,” 

“lessening.”

Lightning is an electrical discharge.

“By lightening the load, we can travel faster.”

“What is your opinion of the story about Ben Franklin and  lightning?”

 

Abused, Confused, & Misused Words by Mary Embree

lightening =

becoming lighter or brighter:

The sky began lightening as the storm passed.

Not to be confused with:

lightning = a brilliant electric discharge in the sky:

The dark sky was pierced by lightning.

 

Dictionary of Military and Associated Terms. 

US Department of Defense 2005.

lightening

The operation (normally carried out at anchor)

of transferring crude oil cargo 

from a large tanker to a smaller tanker,

so reducing the draft of the larger tanker to enable it to enter port.

 

The American Heritage® Student Science Dictionary, Second Edition

light·ning (līt′nĭng)

A flash of light in the sky

caused by an electrical discharge between clouds

or between a cloud and the Earth's surface.

 

The flash heats theair and usually causes thunder.

 

Lightning may appear as a jagged streak, 

a bright sheet, or, in rare cases, a glowing red ball.

 

Did You Know?

The energy within a bolt of lightning

is so great that it heats the air around it 

to temperatures up to five times greater than 

that of the surface of the sun,

or 55,000°F (30,000°C).

 

The rapid expansion of this super-heated air

is what creates the sounds we call thunder.

 

The sounds travel to us more slowly 

than the light from lightning,

 

so it is possible to estimate 

how far away a lightning strike is

by timing the gap between 

when you see the lightning 

and when you hear the thunder it has produced.

 

Count the seconds 

from when you see the flash

until you hear the thunder,

and divide this number by five.

The result will be the number of miles

you are from the point of the strike.

 

THE AMERICAN HERITAGE® SCIENCE DICTIONARY

A CLOSER LOOK at lightning

As storm clouds develop,

the temperature at the top of the cloud 

becomes much cooler than that at the bottom.

 

For reasons that scientists still do not understand,

this temperature difference results in 

the accumulation of negatively charged particles near the base

and positively charged particles near the top of the storm cloud.

 

The negatively charged particles 

repel the electrons of atoms in nearby objects,

such as the bases of other storm clouds 

or tall objects on the ground. 

Consequently, these nearby objects take on a positive charge.

 

The difference in charge, or voltage,

builds until an electric current starts to flow 

between the objects along a pathway of charged atoms in the air.

 

The current flow heats up the air 

to such a degree that it glows, generating lightning.


Initially, a bolt of lightning carrying a negative charge 

darts from one storm cloud to another 

or from a storm cloud to the ground,

leaving the bottom of the cloud with a positive charge.

 

In response, 

a second bolt (reverse lightning) 

shoots in the opposite direction 

(from the other storm cloud or the ground)

as the mass of negative charges on it moves back 

to neutralize the positive charge on the bottom of the first cloud.

 

The heat generated by the lightning causes the air to expand, 

in turn creating very large sound waves, or thunder.

 

Merriam-Webster Dictionary

Lightning

Lightning and lightening are related words 

that both strike English in the 14th century.

The bolt in lightning bolt and thunderbolt 

is from an Old English word related to Old High German bolz, 

meaning "crossbow arrow," 

and, perhaps, Lithuanian beldėti, "to knock or beat." 

You might also be familiar with 

the collocation "a stroke of lightning."

 

Both bolt and stroke, in reference to lightning, 

light up in the English language during the 1500s, 

along with flash,

as in "flash of lightning," 

which is believed to be of onomatopoeic origin.

 

The word lightning itself 

refers to a brief but intense luminous phenomenon 

that is caused by an electrical discharge within clouds, 

between clouds, between clouds an air, or from clouds to ground.

 

Merriam-Webster Dictionary

Choose the Right Synonym for lighten

RELIEVE, ALLEVIATE, LIGHTEN, ASSUAGE, MITIGATE, ALLAY 

mean to make something less grievous.

 

RELIEVEimplies a lifting of enough of a burden to make it tolerable.

took an aspirin to relieve the pain

 

ALLEVIATE implies temporary or partial lessening of pain or distress.

the lotion alleviated the itching

 

LIGHTEN implies reducing a burdensome or depressing weight.

good news would lighten our worries

 

ASSUAGE implies softening or sweetening what is harsh or disagreeable.

ocean breezes assuaged the intense heat

 

MITIGATE suggests a moderating or countering of the effect of something violent or painful.

the need to mitigate barbaric laws

 

ALLAY implies an effective calming or soothing of fears or alarms.

allayed their fears