Weather front areas of precipitation help determine the frontal type and location. There are two different meanings used within meteorology to describe weather around a frontal zone. The term "anafront" describes boundaries which show instability, meaning air rises rapidly along and over the boundary to cause significant weather changes. A "katafront" is weaker, bringing smaller changes in temperature and moisture, as well as limited rainfall. A cold front is located at the leading edge of the temperature drop off, which in an isotherm analysis shows up as the leading edge of the isotherm gradient, and it normally lies within a sharp surface
Marijuana (word) an unlikely source. Other suggestions trace the possible origins of the word to Chinese "ma ren hua" ('hemp seed flower'), possibly itself originating as a loan from an earlier semitic root "*mrj" "hemp". The Semitic root is also found in the Spanish word "mejorana" and in English marjoram ('oregano'), which could be related to the word "marihuana". This is also known in Mexico as "Chinese oregano". Additionally, traditional association with the personal name María Juana ('Mary Jane') is probably a folk etymology. The original Mexican Spanish used forms with the letter ("marihuana"), and is famously used in the Mexican Revolutionary