pinna dorsale
Lemma: pinna dorsale
Translation: dorsal fin; back fin (noun)
Etymology: From Latin 'pinna' meaning 'feather, wing, fin' and 'dorsalis' from 'dorsum' meaning 'back'. The term describes the prominent fin located on the back of many aquatic vertebrates. The English cognate 'dorsal' shares the same Latin root, referring to the back or posterior part of an organism.
Example Usage
Lo squalo è facilmente riconoscibile dalla sua pinna dorsale che emerge dall'acqua.
The shark is easily recognizable by its dorsal fin emerging from the water.
I delfini hanno una pinna dorsale curva.
Dolphins have a curved dorsal fin.
La pinna dorsale del pesce vela è molto grande rispetto al suo corpo.
The sailfish's dorsal fin is very large compared to its body.
Mnemonics
- Think of 'dorsal' as related to 'door-seal' - the fin that seals the top (door) of the fish.
- Pinna sounds like 'pin' - imagine the dorsal fin pinned to the back of a fish.
Related Words, Phrases & Idioms
Synonyms
Cultural Context
The term is commonly used in marine biology, fishing contexts, and nature documentaries. In Italian culture, particularly in coastal regions with strong fishing traditions, knowledge of fish anatomy including the pinna dorsale is part of everyday vocabulary.
Easily Confused With
Explanation: While 'pinna dorsale' refers to the fin on the back of a fish, 'pinna caudale' refers to the tail fin.
Confused word:
La pinna caudale aiuta il pesce a muoversi nell'acqua.
The caudal fin helps the fish move through the water.
Notes: The dorsal fin is located on the back, while the caudal fin is at the end of the fish's body and is typically the main propulsion mechanism.
Mnemonic: 'Dorsale' relates to 'dorso' (back), while 'caudale' relates to 'coda' (tail).