We may find..bacteria, both free and in the zoöglœal form.
Cyclopædia of Practice of Medicinevol. XVIII. 627
1934
Nitrosomonas species may appear in cultures in two forms—as zoögloeal masses which rest at the bottom of liquid cultures, in which the cells are non-motile; and as motile ‘swarmers’.
A. T. Henrici, Biology of Bacteria xviii. 289
1976
Protozoa crawl about the zoogloeal mass and occur in the liquor; most are free-swimming or stalked ciliates.
Annual Review of Microbiologyvol. 30 265
2014
The material moves to a clarifier, where the zoogloeal mass settles.
zoogloeal typically occurs fewer than 0.01 times per million words in modern written English.
zoogloeal is in frequency band 2, which contains words occurring between 0.001 and 0.01 times per million words in modern written English. More about OED's frequency bands
Frequency data is computed programmatically, and should be regarded as an estimate.
Frequency of zoogloeal, adj., 1890–2010
* Occurrences per million words in written English
Historical frequency series are derived from Google Books Ngrams (version 2), a data set based on the Google Books corpus of several million books printed in English between 1500 and 2010.
The overall frequency for a given word is calculated by summing frequencies for the main form of the word, any plural or inflected forms, and any major spelling variations.
For sets of homographs (distinct entries that share the same word-form, e.g. mole, n.¹, mole, n.², mole, n.³, etc.), we have estimated the frequency of each homograph entry as a fraction of the total Ngrams frequency for the word-form. This may result in inaccuracies.
Smoothing has been applied to series for lower-frequency words, using a moving-average algorithm. This reduces short-term fluctuations, which may be produced by variability in the content of the Google Books corpus.
Decade
Frequency per million words
1890
0.0032
1900
0.0038
1910
0.004
1920
0.0045
1930
0.0057
1940
0.0061
1950
0.0065
1960
0.0054
1970
0.0046
1980
0.004
1990
0.0034
2000
0.0024
2010
0.002
Originally published as part of the entry for zoogloea, n.