Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
Mentagrade is the measurement of how mental something is. In this context the word mental is synonymous with words such as 'extreme', 'insane' and 'off the hook'. The unit of Mentagrade is simply expressed as M. Not to be confused with Moles, in Chemistry. Something's absolute magnitude in Mentagrade is difficult to calculate, and especially when something particularly mental is happening, it is unlikely you have the right apparatus to hand; so the value of said phenomenon in Mentagrade is usually an intelligent estimate. Mentagrade is a metric measurement, but the concept of zero is not so simple. 'Room temperature' is considered to be around 2.1M, to two significant figures; this value is calculated by obtaining a weighted average of different locations' mental magnitude; (considering anything particularly mental an anomaly and not including it in the average). To understand the concept of zero M, we need to consider the idea of Mentagrade being dynamic; so we think of it as change in Mentagrade - or ΔM - In effect, we measure how much the Mentagrade has gone up/down by as a consequence of something happening. If something extremely boring happens, then the value of ΔM is going to be negative. We need the concept of zero because if we are taking a non-dynamic snapshot of something's mental magnitude, we measure ΔM from zero, so we do not need to express it as ΔM, but rather as just M, as it does not have any concept of time - if we are measuring ΔM at a point, then we measure it from 'room temperature' (2M). The scale of Mentagrade is continuous and infinite, but something has to be really significantly mental to score above 10M.
Text fits
Save
Cancel