One of the mysteries of the English language finally explained.
Of an insect, especially a bee: collecting nectar from the flowers of only a few related plants. Contrasted with polytropic.
Late 19th century. From oligo- + -tropic, after German oligotrop, adjective<br>1940s; earliest use found in Philosophical Transactions of the Royal Society of London. Variant of oligotrophic, by association of the second element with -tropic.
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