Operkulum

Operculum - hard structure which closes the aperture of a gastropod when the animal retreats into the shell. Article “Operkulum” in Czech Wikipedia has 6.6 points for quality (as of July 1, 2025).

This article has the best quality in English Wikipedia. Also, this article is the most popular in that (Czech) language version.

Since the creation of article “Operkulum”, its content was written by 9 registered users of Czech Wikipedia and edited by 224 registered Wikipedia users in all languages.

The article is cited 17 times in Czech Wikipedia and cited 4196 times in all languages.

The highest Authors Interest rank from 2001:

• Local (Czech): #4915 in May 2007
• Global: #47716 in August 2010

The highest popularity rank from 2008:

• Local (Czech): #43621 in January 2008
• Global: #131997 in August 2010

There are 16 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) Operculum (gastropod)		41.5887
2	Portuguese (pt) Opérculo (gastrópode)		37.3197
3	Catalan (ca) Opercle (gasteròpodes)		28.234
4	Galician (gl) Opérculo (gasterópodos)		23.1522
5	Spanish (es) Opérculo (gasterópodos)		22.4753
6	Russian (ru) Оперкулум (брюхоногие)		19.8741
7	Dutch (nl) Operculum (mollusken)		18.6726
8	German (de) Operculum		16.4862
9	Chinese (zh) 螺厣		14.5465
10	Bulgarian (bg) Оперкулум (мекотели)		12.745

More...

The following table shows the most popular language versions of the article.

The most popular language versions of the article "Operkulum" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Operculum (gastropod)		694 001
2	German (de) Operculum		239 471
3	Italian (it) Opercolo		182 807
4	Russian (ru) Оперкулум (брюхоногие)		39 911
5	Spanish (es) Opérculo (gasterópodos)		23 147
6	French (fr) Opercule (mollusque)		20 259
7	Polish (pl) Wieczko (konchiologia)		16 096
8	Czech (cs) Operkulum		15 671
9	Portuguese (pt) Opérculo (gastrópode)		14 398
10	Dutch (nl) Operculum (mollusken)		13 695

More...

The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "Operkulum" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Operculum (gastropod)		2 976
2	German (de) Operculum		799
3	Italian (it) Opercolo		401
4	Russian (ru) Оперкулум (брюхоногие)		257
5	Chinese (zh) 螺厣		158
6	French (fr) Opercule (mollusque)		153
7	Spanish (es) Opérculo (gasterópodos)		135
8	Dutch (nl) Operculum (mollusken)		85
9	Portuguese (pt) Opérculo (gastrópode)		74
10	Czech (cs) Operkulum		46

More...

The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "Operkulum" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	English (en) Operculum (gastropod)		57
2	German (de) Operculum		46
3	Italian (it) Opercolo		31
4	Dutch (nl) Operculum (mollusken)		22
5	Russian (ru) Оперкулум (брюхоногие)		17
6	French (fr) Opercule (mollusque)		12
7	Catalan (ca) Opercle (gasteròpodes)		9
8	Czech (cs) Operkulum		9
9	Polish (pl) Wieczko (konchiologia)		5
10	Greek (el) Επιπωμάτιο (γαστερόποδα)		3

More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "Operkulum" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	Italian (it) Opercolo		2
2	Bulgarian (bg) Оперкулум (мекотели)		0
3	Catalan (ca) Opercle (gasteròpodes)		0
4	Czech (cs) Operkulum		0
5	German (de) Operculum		0
6	Greek (el) Επιπωμάτιο (γαστερόποδα)		0
7	English (en) Operculum (gastropod)		0
8	Spanish (es) Opérculo (gasterópodos)		0
9	French (fr) Opercule (mollusque)		0
10	Galician (gl) Opérculo (gasterópodos)		0

More...

The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "Operkulum" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Operculum (gastropod)		2 636
2	Italian (it) Opercolo		409
3	German (de) Operculum		258
4	Portuguese (pt) Opérculo (gastrópode)		228
5	Chinese (zh) 螺厣		165
6	Dutch (nl) Operculum (mollusken)		147
7	Spanish (es) Opérculo (gasterópodos)		81
8	French (fr) Opercule (mollusque)		80
9	Russian (ru) Оперкулум (брюхоногие)		68
10	Polish (pl) Wieczko (konchiologia)		61

More...

#	Language	Value
bg	Bulgarian Оперкулум (мекотели)
ca	Catalan Opercle (gasteròpodes)
cs	Czech Operkulum
de	German Operculum
el	Greek Επιπωμάτιο (γαστερόποδα)
en	English Operculum (gastropod)
es	Spanish Opérculo (gasterópodos)
fr	French Opercule (mollusque)
gl	Galician Opérculo (gasterópodos)
it	Italian Opercolo
lt	Lithuanian Operkulas
nl	Dutch Operculum (mollusken)
pl	Polish Wieczko (konchiologia)
pt	Portuguese Opérculo (gastrópode)
ru	Russian Оперкулум (брюхоногие)
zh	Chinese 螺厣

Best Rank

Czech: #43621 01.2008

Global: #131997 08.2010

Best Rank

Czech: #4915 05.2007

Global: #47716 08.2010

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The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information