The crossword solutions for the term 'TIMER SUBJECT' are 'EGG'. The term 'TIMER SUBJECT' refers to a type of experiment in which an EGG is used as the subject. This type of experiment is used to measure the time it takes for a reaction to occur. The EGG is usually placed in a container with a timer and then observed to see how long it takes for the EGG to change in some way, such as cracking or breaking.