• oacking plant,
• lacking plant,
• -acking plant,
• 0acking plant,
• pzcking plant,
• pscking plant,
• pwcking plant,
• pqcking plant,
• paxking plant,
• pavking plant,
• pafking plant,
• padking plant,
• pacjing plant,
• pacming plant,
• pacling plant,
• pacoing plant,
• paciing plant,
• packung plant,
• packjng plant,
• packkng plant

The adjective form of "packing plant" is "packing-plant" or "packing plant". Here, the phrase is being used as an attributive adjective, describing a type of plant or facility that specializes in packing goods.

The plural form of "packing plant" is "packing plants".

The singular form of the word "packing plant" is "packing plant". The word does not change in its singular form.