HELLO,

 Lateral entry is word like entry from side so basically whose are admission take in 2nd year not start from 1st year like if you did BCA.Normal way you get admission in 2nd year that is called lateral entry .

However the criteria differs from college to collge course to course lateral entry to btech colleges include

• Passed Diploma examination with at least 45% marks (40% in case of candidates belonging to reserved category) in appropriate branch of Engineering and Technology.
• Passed B.Sc. Degree from a recognized University as defined by UGC, with at least 45% marks (40% in case of candidates belonging to reserved category) and passed 10+2 examination with Mathematics as a subject.
• Provided that the students belonging to B.Sc. stream, shall clear the subjects Engineering Graphics/ Engineering Drawing and Engineering Mechanics of the First Year Engineering Programme along with the Second Year subjects.
• Provided that the students belonging to B.Sc. stream shall be considered with students belonging to the Diploma stream.

hope this helps you !

all the best !