Glossary
The words a wearable's marketing page won’t explain.
Plain definitions for glucose and cuffless blood-pressure wearables.
What the terms mean and where LifeLeaf uses each one.
Time in range
The share of time a continuous glucose signal spends inside a target band — usually 70-180 mg/dL.
Glucose variability
How much a glucose trend swings up and down over time, as distinct from where its average sits.
Cuffless blood pressure
A blood-pressure trend estimated from the wrist with no inflatable cuff.
MARD
Mean Absolute Relative Difference — how closely a device's readings track a reference measurement.
Heart rhythm (HRV)
The natural variation in the time between consecutive heartbeats.
Calibration
Checking a device's readings against a trusted reference so it can be adjusted to you.
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