annealing
UK[əˈniːlɪŋ]US[əˈniːlɪŋ]
n
The process of heating a material, especially metal or glass, and then cooling it slowly to remove internal stresses and make it stronger and less brittle.
n
A process of making something, such as an idea or a relationship, stronger or more stable through a period of difficulty or pressure.
Morpheme Breakdown
an
neal
ing
an
on, to, toward
neal
to set on fire, to burn
ing
Etymology
The word 'annealing' originates from the Old English verb 'onǣlan', meaning "to set on fire, to kindle," which itself is composed of the prefix 'on-' (on, to) and 'ǣlan' (to burn). This term was used to describe the literal process of heating metal in a fire. The modern technical sense, specifically involving controlled heating and slow cooling to alter physical properties, developed in the context of metallurgy and glassmaking. The metaphorical extension to describe the strengthening of abstract things through a challenging process mirrors the physical transformation, drawing a direct logical line from the ancient act of burning to the modern concepts of tempering and fortification.
Analysis
Structure: an + neal + ing
an (prefix, Old English, meaning "on, to, toward")
neal (root, Old English, from 'nēlan', meaning "to set on fire, to burn")
ing (suffix, Old English, forming verbal nouns indicating action or process)
Examples
The glass underwent a careful annealing process to prevent it from shattering under thermal stress.
The annealing of steel is a critical step in manufacturing durable tools.
Their friendship went through a period of annealing during the difficult project, emerging stronger than before.