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01
hydra, zoetwaterpoliep
a freshwater polyp with a cylindrical body and tentacles
Voorbeelden
Researchers observed a hydra attached to the underside of a leaf in the pond, its tentacles swaying gently in the water.
Onderzoekers observeerden een hydra vastgemaakt aan de onderkant van een blad in de vijver, zijn tentakels zachtjes wiegend in het water.
In the lab, students conducted experiments to study the feeding behavior of the hydra.
In het laboratorium voerden studenten experimenten uit om het voedingsgedrag van de hydra te bestuderen.
02
hydra, hardnekkig probleem
trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality
03
hydra, de Hydra
a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer
04
hydra, hydra van Lerna
a mythical serpent-like creature in Greek mythology that has multiple heads, and if one head is cut off, two more will grow in its place
