This is the 17989th most frequent Russian word.
физико
"Физико" is not a standard Russian word, but it might be a colloquial or abbreviated form referring to "physicist" (физик) or related to "physics." Context is needed for a precise definition.
Here, 'физико-' is used as a prefix combined with '-математический', forming a compound adjective to describe the faculty offering physics and mathematics studies.
Физико-математический факультет предлагает интересные программы для студентов.
The Faculty of Physics and Mathematics offers interesting programs for students.
In this sentence, 'физико-' acts as a prefix combined with '-химических', forming a compound adjective signifying something related to physical and chemical experiments.
Учебное пособие для физико-химических экспериментов было очень полезным.
The educational manual for physicochemical experiments was very useful.
Here, 'физико-' is again a prefix, combined with '-биологические'. Together, it forms a compound adjective referring to technologies combining principles of physics and biology.