This is the 16803rd most frequent Russian word.
смертоносных
"Deadly" or "lethal."
The word 'смертоносных' is used to describe the weapons, emphasizing their ability to cause death and destruction.
Они нашли склад, полный смертоносных оружий.
They found a warehouse full of deadly weapons.
Here, 'смертоносных' characterizes substances that can lead to fatal outcomes when mishandled.
Учёные изучают свойства некоторых смертоносных веществ.
Scientists are studying the properties of some deadly substances.
In this context, 'смертоносных' describes epidemics that have the potential to result in loss of life, emphasizing the importance of prevention.