---
title: allergen — school dictionary · trees and pragmatics
description: «allergen» in the school dictionary: An allergen is a substance that causes an allergic reaction in some people, such as pollen, peanuts, dust mites, pet fur or bee stings. Every meaning for a pupil with its dependency tree and pragmatics.
---

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# allergen

<!-- .vintro -->
**Who acts:** allergen, substance, Peanuts, Food labels, Pollen, school kitchen · **What happens:** be, cause, show, keep, list · **To what, where:** substance, allergic reaction, common allergen, allergens, allergen, hay fever

<!-- .vabout -->
«allergen» in the school dictionary: its meaning for a pupil and its 6 examples, every sentence parsed by Mova itself — its syntax tree, a dependency tree in the style of Universal Dependencies, and its pragmatics clause by clause. The word in the dictionary, with its sense in the lessons: [allergen in the school dictionary](https://md.mova.elamur.ai/free/en/dictionaries/school/w/allergen.md).

## Meaning 1 {#m1}

<!-- .ven lang=en -->
An allergen is a substance that causes an allergic reaction in some people, such as pollen, peanuts, dust mites, pet fur or bee stings.

<!-- fold The tree, 24 words -->
```conllu
# sent_id = dict:school:allergen:m1:1
# text = An allergen is a substance that causes an allergic reaction in some people, such as pollen, peanuts, dust mites, pet fur or bee stings.
1	An	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	allergen	allergen	NOUN	NN	Number=Sing	5	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	substance	substance	NOUN	NN	Number=Sing	0	root	_	_
6	that	that	PRON	WDT	PronType=Rel	7	nsubj	_	_
7	causes	cause	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	acl:relcl	_	_
8	an	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
9	allergic	allergic	ADJ	JJ	Degree=Pos	10	amod	_	_
10	reaction	reaction	NOUN	NN	Number=Sing	7	obj	_	_
11	in	in	ADP	IN	_	13	case	_	_
12	some	some	DET	DT	PronType=Ind	13	det	_	_
13	people	people	NOUN	NNS	Number=Plur	7	obl	_	SpaceAfter=No
14	,	,	PUNCT	,	_	17	punct	_	_
15	such	such	ADJ	JJ	Degree=Pos|ExtPos=ADP	17	case	_	_
16	as	as	ADP	IN	_	15	fixed	_	_
17	pollen	pollen	NOUN	NN	Number=Sing	5	conj	_	SpaceAfter=No
18	,	,	PUNCT	,	_	19	punct	_	_
19	peanuts	peanut	NOUN	NNS	Number=Plur	5	appos	_	SpaceAfter=No
20	,	,	PUNCT	,	_	22	punct	_	_
21	dust	dust	NOUN	NN	Number=Sing	22	compound	_	_
22	mites	mite	NOUN	NNS	Number=Plur	19	conj	_	SpaceAfter=No
23	,	,	PUNCT	,	_	25	punct	_	_
24	pet	pet	NOUN	NN	Number=Sing	25	compound	_	_
25	fur	fur	NOUN	NN	Number=Sing	22	appos	_	_
26	or	or	CCONJ	CC	_	28	cc	_	_
27	bee	bee	NOUN	NN	Number=Sing	28	compound	_	_
28	stings	sting	NOUN	NNS	Number=Plur	25	conj	_	SpaceAfter=No
29	.	.	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | a allergen | a substance and pollen |  |  |  |  | tree rules |
| 2 | **cause** | present | a substance and pollen | a allergic reaction |  |  |  | in some people | vn engender-27.1-1 «NP V NP»: agent=Precondition reaction=Patient |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## Example 1 {#x1}

<!-- .ven lang=en -->
Peanuts are a common allergen.

```conllu
# sent_id = dict:school:allergen:x1:1
# text = Peanuts are a common allergen.
1	Peanuts	peanut	NOUN	NNS	Number=Plur	5	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
4	common	common	ADJ	JJ	Degree=Pos	5	amod	_	_
5	allergen	allergen	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
6	.	.	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | Peanuts | a common allergen |  |  |  |  | tree rules |

## Example 2 {#x2}

<!-- .ven lang=en -->
Food labels show allergens in bold.

```conllu
# sent_id = dict:school:allergen:x2:1
# text = Food labels show allergens in bold.
1	Food	food	NOUN	NN	Number=Sing	2	compound	_	_
2	labels	label	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	show	show	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	allergens	allergen	NOUN	NNS	Number=Plur	3	obj	_	_
5	in	in	ADP	IN	_	6	case	_	_
6	bold	bold	NOUN	NN	Number=Sing	3	obl	_	SpaceAfter=No
7	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **show** | present | Food labels | allergens |  |  |  | in bold | vn crane-40.3.2 «NP V NP PP.recipient PP.theme»: agent=Agent allergen=Patient in bold=Topic |

## Example 3 {#x3}

<!-- .ven lang=en -->
Pollen is the allergen that causes hay fever.

```conllu
# sent_id = dict:school:allergen:x3:1
# text = Pollen is the allergen that causes hay fever.
1	Pollen	pollen	NOUN	NN	Number=Sing	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	allergen	allergen	NOUN	NN	Number=Sing	0	root	_	_
5	that	that	PRON	WDT	PronType=Rel	6	nsubj	_	_
6	causes	cause	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	acl:relcl	_	_
7	hay	hay	NOUN	NN	Number=Sing	8	compound	_	_
8	fever	fever	NOUN	NN	Number=Sing	6	obj	_	SpaceAfter=No
9	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | Pollen | the allergen |  |  |  |  | tree rules |
| 2 | **cause** | present | the allergen | hay fever |  |  |  |  | vn engender-27.1-1 «NP V NP»: agent=Precondition fever=Patient |

## Example 4 {#x4}

<!-- .ven lang=en -->
The school kitchen keeps a list of allergens.

```conllu
# sent_id = dict:school:allergen:x4:1
# text = The school kitchen keeps a list of allergens.
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	school	school	NOUN	NN	Number=Sing	3	compound	_	_
3	kitchen	kitchen	NOUN	NN	Number=Sing	4	nsubj	_	_
4	keeps	keep	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	list	list	NOUN	NN	Number=Sing	4	obj	_	_
7	of	of	ADP	IN	_	8	case	_	_
8	allergens	allergen	NOUN	NNS	Number=Plur	6	nmod	_	SpaceAfter=No
9	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **keep** | present | the school kitchen | a list of allergens |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent list=Theme |
| 2 | **list** |  |  | allergens |  |  |  |  | nom list «communication transitive»: of=patient |

## Example 5 {#x5}

<!-- .ven lang=en -->
Cat fur is an allergen for my cousin.

```conllu
# sent_id = dict:school:allergen:x5:1
# text = Cat fur is an allergen for my cousin.
1	Cat	cat	NOUN	NN	Number=Sing	2	compound	_	_
2	fur	fur	NOUN	NN	Number=Sing	5	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	an	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	allergen	allergen	NOUN	NN	Number=Sing	0	root	_	_
6	for	for	ADP	IN	_	8	case	_	_
7	my	my	PRON	PRP$	Case=Gen|Number=Sing|Person=1|Poss=Yes|PronType=Prs	8	nmod:poss	_	_
8	cousin	cousin	NOUN	NN	Number=Sing	5	nmod	_	SpaceAfter=No
9	.	.	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | Cat fur | a allergen |  |  |  | for my cousin | tree rules |

## Example 6 {#x6}

<!-- .ven lang=en -->
An allergen can cause sneezing, rash or swelling.

```conllu
# sent_id = dict:school:allergen:x6:1
# text = An allergen can cause sneezing, rash or swelling.
1	An	a	DET	DT	Definite=Ind|PronType=Art	2	det	_	_
2	allergen	allergen	NOUN	NN	Number=Sing	4	nsubj	_	_
3	can	can	AUX	MD	VerbForm=Fin	4	aux	_	_
4	cause	cause	VERB	VB	VerbForm=Inf	0	root	_	_
5	sneezing	sneezing	NOUN	NN	Number=Sing	4	obj	_	SpaceAfter=No
6	,	,	PUNCT	,	_	7	punct	_	_
7	rash	rash	NOUN	NN	Number=Sing	5	conj	_	_
8	or	or	CCONJ	CC	_	9	cc	_	_
9	swelling	swelling	NOUN	NN	Number=Sing	5	conj	_	SpaceAfter=No
10	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **cause** | can | a allergen | sneezing and rash or swelling |  |  |  |  | vn engender-27.1-1 «NP V NP»: agent=Precondition sneezing=Patient |

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**Text:** the school dictionary of Mova's schools (`world/data/dictionary-schools/`), written for Mova. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each meaning and example read on its own. Elamur Cosmic License.

<!-- /div -->

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