Background for allergens
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allergens

/ˈælərdʒənz/ /ˈælərdʒɪnz/

Meanings
noun
A substance which causes an allergic reaction.

Examples :

"Pollen, dust, and spores are common allergens."
medicine substance biology

Related Words

Illustration and

and noun

/ænd/ /ənd/ /ən/

In rhythm, the second half of a divided beat.

"The drummer emphasized the ands in the song, making the rhythm very clear. "

Illustration common

common noun

/ˈkɒmən/ /ˈkɑmən/

Mutual good, shared by more than one.

"The common good of the school is ensured by a strong parent-teacher association. "

Illustration dust

dust noun

/dʌst/

Fine particles

"A thick layer of dust covered the old book. "

Illustration substance

substance noun

/ˈsʌbstəns/

Physical matter; material.

"The scientist carefully examined the substance to determine its chemical composition. "

Illustration allergic

allergic noun

[ə.ˈlɜː.dʒɪk] [ə.ˈlɝ.dʒɪk]

A person with a tendency to having allergies; a person with multiple or severe allergies.

"My younger brother is an allergic; he has severe allergies to peanuts and pollen. "

Illustration causes

causes noun

/ˈkɑzɪz/ /ˈkɔːzɪz/ /ˈkɔzɪz/

(often with of, typically of adverse results) The source of, or reason for, an event or action; that which produces or effects a result.

"They identified a burst pipe as the cause of the flooding."

Illustration are

are noun

/ɛə/ /ɛəɹ/

An accepted (but deprecated and rarely used) SI unit of area equal to 100 square metres, or a former unit of approximately the same extent. Symbol: a.

"The old blueprints for the house used the are as a unit of measurement. "

Illustration which

which pronoun

/wɪt͡ʃ/

(interrogative) What one or ones (of those mentioned or implied).

"By now, you must surely know which is which."

Illustration an

an numeral

/æn/

One

"My sister has an older brother. "

Illustration pollen

pollen noun

/ˈpɒlən/ /ˈpɑlən/

A fine granular substance produced in flowers. Technically a collective term for pollen grains (microspores) produced in the anthers of flowering plants. (This specific usage dating from mid 18th century.)

"Bees collect pollen from flowers to make honey. "

Illustration reaction

reaction noun

/ɹiˈækʃən/

An action or statement in response to a stimulus or other event.

"The announcement of the verdict brought a violent reaction."

Illustration spores

spores noun

/spɔrz/ /spɔːrz/

A reproductive particle, usually a single cell, released by a fungus, alga, or plant that may germinate into another.

"The mold grew in the damp basement, releasing tiny spores into the air that made my allergies worse. "