Biology: Upper-intermediate Spanish vocabulary

9 Spanish words about biology at upper-intermediate level. Each entry links to the full meaning, a real example sentence, and usage notes written for English speakers.

• especienounspecies — a group of living organisms sharing common characteristics
• célulanouncell — the biological unit of life; also a small organisational or covert unit
• criaturanouncreature — any living being, especially non-human; metaphorically any created or dependent being
• digerirverbto digest
• silvestreadjectivegrowing or living in a natural state, not cultivated or domesticated
• acuáticoadjectiveliving in, found in or relating to water
• mamíferonouna warm-blooded animal that breathes air, has hair or fur and feeds its young with milk
• gennoungene — a unit of hereditary information encoded in DNA
• instintonouninstinct — an innate tendency to behave in a particular way without reasoning