planktonologistn.
/ˌplaŋ(k)təˈnɒlədʒɪst/, U.S. /ˌplæŋktəˈnɑlədʒəst/ = planktologist n.
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the world > life > biology > study > person who studies > [noun] > specific organisms
zoophytist1814
zoophytologist1835
parasitologist1862
pathobiologist1888
planktologist1891
protistologist1907
planktonologist1913
1913 Jrnl. Ecol. 1 207 Other considerations have led planktonologists to the view that a large number of the European and North American lake plankton forms have migrated south from the northern regions.
1939 G. W. Prescott in F. R. Moulton Probl. Lake Biol. 68 The planktonologist turns to limnology for an explanation of geographical and local distribution.
1994 Science 27 May 1278/2 ‘No gold, but some very good scientific results,’ says planktonologist Mikhail Vinogradov.
This is a new entry (OED Third Edition, June 2006; most recently modified version published online March 2022).
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n.1913