Background for litmus
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litmus

/ˈlɪtməs/

Meanings
noun
A dyestuff extracted from certain lichens, that changes color when exposed to pH levels greater than or less than certain critical levels.

Examples :

"The science teacher used litmus paper to test if the liquid was an acid or a base, as the paper turned red in acids and blue in bases. "
chemistry substance material color science

Related Words

Illustration dyestuff

dyestuff noun

/ˈdaɪˌstʌf/

Any soluble pigment used for dyeing the hair, fabric, etc.

"The tailor used special dyestuffs to create the vibrant blue color for the new school uniforms. "

Illustration exposed

exposed verb

/ɪkˈspoʊzd/ /ɛkˈspoʊzd/

To reveal, uncover, make visible, bring to light, introduce to.

"The newspaper exposed the company's illegal dumping of waste. "

Illustration demanding

demanding verb

/dɪˈmɑːndɪŋ/ /dəˈmændɪŋ/

To request forcefully.

"I demand to see the manager."

Illustration greater

greater adjective

/ˈɡɹeɪ.tə(ɹ)/

Relatively large in scale, size, extent, number (i.e. having many parts or members) or duration (i.e. relatively long); very big.

"A great storm is approaching our shores."

Illustration changes

changes noun

/ˈtʃeɪndʒɪz/

The process of becoming different.

"The product is undergoing a change in order to improve it."

Illustration lichens

lichens noun

/ˈlaɪkənz/ /ˈlɪtʃənz/

Any of many symbiotic organisms, being associations of algae and fungi, often found as white or yellow patches on old walls, etc.

"The old stone wall was covered in patches of green, gray, and yellow lichens. "

Illustration extracted

extracted verb

/ɛkˈstɹæktɪd/

To draw out; to pull out; to remove forcibly from a fixed position, as by traction or suction, etc.

"to extract a tooth from its socket, a stump from the earth, or a splinter from the finger"

Illustration certain

certain noun

/ˈsɝtn̩/ /ˈsɜːtn̩/

(with "the") Something certain.

"The certain success of the project was a relief to the team. "

Illustration critical

critical noun

/ˈkɹɪtɪkəl/

A critical value, factor, etc.

"The critical factor in getting a good grade on the history test was understanding the timelines. "

Illustration attribute

attribute noun

/ˈætrɪbjuːt/ /əˈtrɪbjuːt/

A characteristic or quality of a thing.

"His finest attribute is his kindness."

Illustration science

science noun

/ˈsaɪəns/

A particular discipline or branch of learning, especially one dealing with measurable or systematic principles rather than intuition or natural ability.

"Of course in my opinion Social Studies is more of a science than an art."

Illustration pressure

pressure noun

[ˈpɹɛʃ.ə(ɹ)] [ˈpɹɛʃ.ɚ]

A pressing; a force applied to a surface.

"Apply pressure to the wound to stop the bleeding."