Definition
The form of long-term memory that stores general factual knowledge — concepts, meanings, rules, and principles — independent of when or where the information was learned.
Plain English
It's the part of memory that holds facts you know, like what a stall is or what the airspeed indicator does, without you needing to remember the specific moment you learned it.
Context Anchor
Encountered in aviation human factors, learning, and memory discussions.
Derivation
From the Greek 'semantikos,' meaning 'significant' or 'related to meaning.' Semantic memory is the memory of meanings — the facts and concepts themselves — rather than personal experiences.
Why Pilots Care
Most of what a pilot learns from books, charts, and regulations is stored in semantic memory. Strong semantic memory means a pilot can recall procedures, limitations, and principles quickly and accurately when needed in the cockpit.
Intuition Check
Semantic memory is not memory of doing a task with your hands. It is memory of meanings and facts you can explain in words.
Example Sentence 1
A pilot's semantic memory holds facts like the standard sea-level pressure of 29.92 inches of mercury, even if they don't remember the lesson where they first learned it.
Example Sentence 2
Effective study builds semantic memory so that knowledge of aircraft limitations remains available during preflight planning.