Article from daily regularly concerned with temperature (7)
I believe the answer is:
thermal
'concerned with temperature' is the definition.
I can't judge whether this definition defines the answer.
'article from daily regularly' is the wordplay.
'article' becomes 'the' (the definite article).
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'from'+'daily'='fromdaily'
The alternating letters of 'fromdaily' are 'rmal'.
'the'+'rmal'='THERMAL'
Can you help me to learn more?
(Other definitions for thermal that I've seen before include "which can take a glider up" , "Warm or hot - underwear?" , "type of baths" , "Upward current of warm air" , "Caloric" .)