Verbs ending in -e simply add -d to form the past tense. This is the most straightforward regular rule.
Lyophilize is regular. It follows the -d Addition rule.
Use past time markers: "Yesterday, she lyophilized to the store."
No. Use "did not lyophilize" (not "did not lyophilized").
The verb lyophilize follows the standard English past tense conjugation rule. When forming the past tense, lyophilize becomes lyophilized. This follows the -d Addition pattern, which is one of the most common conjugation rules in English.
Understanding why lyophilize becomes lyophilized helps with spelling and pronunciation. Verbs ending in -e simply add -d to form the past tense. This is the most straightforward regular rule.
When using lyophilized in writing, remember that it functions as a past tense verb and typically appears with time markers like yesterday, last week, or ago. For example: "Yesterday, she lyophilized to the store." The past tense form does not change based on the subject — I lyophilized, you lyophilized, he/she lyophilized, we lyophilized, they lyophilized.