In medical terms (since you categorised your question in "Health"), a threshold is defined as:
1 - The minimal stimulus that produces excitation of a human structure (i.e - the minimal stimulus eliciting a motor response).
2- The lower limit of perception for a stimulus.
3 - The point at which a stimulus produces a sensation.
In architectural terms, a threshold is defined as:
1- A strip of metal, wood or stone forming the bottom of a doorway.
2 - A point of entry or beginning in a building.
In medical terms, that would refer to an injury to the eye socket.
DAMD means; Domestic Animal Medical Doctor
Yes, the word 'threshold' is a singular, common, noun.The noun threshold is a concrete noun as a word for astrip of wood, metal, or stone forming the bottom of a doorway and crossed in entering a house or room.The noun threshold is an abstract noun as a word forany place or point of entering or beginning.
When it reaches the nerve impulse threshold, the next neuron will fire..
If it is directional terms superfacial for upper body.
Medical terms used by the medical profession in caring for patients.
Occult means hidden in medical terms.
Nerves conduct impulses in medical terms.
Progressive medical terms means it will get worse.
What does code610 mean in medical terms
Caudal is the opposite of cranial in medical terms.
In medical terms, "sinister" means left.
In medical terms, stool means feces.
Inspiration in medical terms means inhaling.
In medical terms, trig stands for triglycerides.Trig in medical terms stands for triglycerides.
Fe in medical terms usually refers to iron.
In medical terms, iii means three.