specimen
US /ˈspes.ə.mɪn/
UK /ˈspes.ə.mɪn/

1.
espécimen, muestra
an individual animal, plant, piece of a mineral, etc., used as an example of its species or type for scientific study or display.
:
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The museum has a rare specimen of a giant squid.
El museo tiene un raro espécimen de calamar gigante.
•
They collected soil specimens for analysis.
Recogieron muestras de suelo para su análisis.